Abstract

Up to 16 W output power has been obtained using spectral beam combining of two 1063 nm DBR-tapered diode lasers. Using a reflecting volume Bragg grating, a combining efficiency as high as 93.7% is achieved, resulting in a single beam with high spatial coherence. The result represents the highest output power achieved by spectral beam combining of two single element tapered diode lasers. Since spectral beam combining does not affect beam propagation parameters, M2-values of 1.8 (fast axis) and 3.3 (slow axis) match the M2- values of the laser with lowest spatial coherence. The principle of spectral beam combining used in our experiments can be expanded to combine more than two tapered diode lasers and hence it is expected that the output power may be increased even further in the future.

© 2011 OSA

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  1. O. Svelto, S. Longhi, G. Della Valle, S. Kück, G. Huber, M. Pollnau, H. Hillmer, S. Hansmann, R. Engelbrecht, H. Brand, J. Kaiser, A. B. Peterson, R. Malz, S. Steinberg, G. Marowsky, U. Brinkmann, D. Lot, A. Borsutzky, H. Wächter, M. W. Sigrist, E. Saldin, E. Schneidmiller, M. Yurkov, K. Midorikawa, J. Hein, R. Sauerbrey, and J. Helmcke, “Lasers and Coherent Light Sources,” in Springer Handbook of Lasers and Optics, F. Träger, ed., (Springer Science and Business Media, New York, 2007).
  2. U. Brauch, P. Loosen, and H. Opower, “High-Power Diode Lasers for Direct Applications,” in High Power Diode Lasers: Fundamentals, Technology, Applications, R. Diehl, ed., (Springer, Berlin, 2000).
  3. T. Y. Fan, “Laser beam combining for high-power, high-radiance sources,” IEEE J. Sel. Top. Quantum Electron. 11(3), 567–577 (2005).
    [CrossRef]
  4. T. H. Loftus, A. M. Thomas, M. Norsen, J. Minelly, P. Jones, E. Honea, S. A. Shakir, S. Hendow, W. Culver, B. Nelson, and M. Fitelson, “Four-Channel, High Power, Passively Phase Locked Fiber Array,” in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2008), paper WA4.
  5. G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
    [CrossRef]
  6. A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express 10(21), 1167–1172 (2002).
    [PubMed]
  7. A. A. Ishaaya, N. Davidson, and A. A. Friesem, “Passive laser beam combining with intracavity interferometric combiners,” IEEE Sel. Top. Quantum Electron. 15(2), 301–311 (2009).
    [CrossRef]
  8. A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
    [CrossRef]
  9. M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
    [CrossRef]
  10. B. Liu, Y. Liu, and Y. Braiman, “Coherent beam combining of high power broad-area laser diode array with a closed-V-shape external Talbot cavity,” Opt. Express 18(7), 7361–7368 (2010).
    [CrossRef] [PubMed]
  11. B. Thestrup, M. Chi, B. Sass, and P. M. Petersen, “High brightness laser source based on polarization coupling of two diode lasers with asymmetric feedback,” Appl. Phys. Lett. 82(5), 680–682 (2003).
    [CrossRef]
  12. T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
    [CrossRef] [PubMed]
  13. C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
    [CrossRef] [PubMed]
  14. W. Schulz and R. Poprawe, “Manufacturing with novel high-power diode lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 696–705 (2000).
    [CrossRef]
  15. D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
    [CrossRef]
  16. C. Roychoudhuri, “Desk-top manufacturing using diode lasers,” Proc. SPIE 3274, 162–170 (1998).
    [CrossRef]
  17. H. Shabir, B. Lal, and M. Rafat, “A comparative study of the properties of terbium aluminum garnet powder sintered in air, vacuum and by laser irradiation,” Ceram. Int. 36(1), 365–369 (2010).
    [CrossRef]
  18. M. Behringer, “High-Power Diode Laser Technology and Characteristics,” in High Power Diode Lasers: Technology and Applications, F. Bachmann, P. Loosen, and R. Poprawe, ed., (Springer, Berlin, 2007)
  19. V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
    [CrossRef]
  20. B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
    [CrossRef] [PubMed]
  21. D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
    [CrossRef] [PubMed]
  22. O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, “Beam combining of lasers with high spectral density using volume Bragg gratings,” Opt. Commun. 282(13), 2560–2563 (2009).
    [CrossRef]
  23. A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
    [CrossRef] [PubMed]
  24. O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
    [CrossRef]
  25. B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
    [CrossRef]
  26. K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
    [CrossRef]
  27. I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
    [CrossRef]
  28. I. V. Ciapurin, L. B. Glebov, and V. I. Smirnov, “Modeling of phase volume diffractive gratings, part 1: transmitting sinusoidal uniform gratings,” Opt. Eng. 45(1), 015802 (2006).
    [CrossRef]

2010 (4)

B. Liu, Y. Liu, and Y. Braiman, “Coherent beam combining of high power broad-area laser diode array with a closed-V-shape external Talbot cavity,” Opt. Express 18(7), 7361–7368 (2010).
[CrossRef] [PubMed]

D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
[CrossRef]

H. Shabir, B. Lal, and M. Rafat, “A comparative study of the properties of terbium aluminum garnet powder sintered in air, vacuum and by laser irradiation,” Ceram. Int. 36(1), 365–369 (2010).
[CrossRef]

D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
[CrossRef] [PubMed]

2009 (5)

O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, “Beam combining of lasers with high spectral density using volume Bragg gratings,” Opt. Commun. 282(13), 2560–2563 (2009).
[CrossRef]

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

A. A. Ishaaya, N. Davidson, and A. A. Friesem, “Passive laser beam combining with intracavity interferometric combiners,” IEEE Sel. Top. Quantum Electron. 15(2), 301–311 (2009).
[CrossRef]

O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
[CrossRef]

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

2008 (2)

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

2007 (2)

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

2006 (1)

I. V. Ciapurin, L. B. Glebov, and V. I. Smirnov, “Modeling of phase volume diffractive gratings, part 1: transmitting sinusoidal uniform gratings,” Opt. Eng. 45(1), 015802 (2006).
[CrossRef]

2005 (4)

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

T. Y. Fan, “Laser beam combining for high-power, high-radiance sources,” IEEE J. Sel. Top. Quantum Electron. 11(3), 567–577 (2005).
[CrossRef]

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

2003 (2)

B. Thestrup, M. Chi, B. Sass, and P. M. Petersen, “High brightness laser source based on polarization coupling of two diode lasers with asymmetric feedback,” Appl. Phys. Lett. 82(5), 680–682 (2003).
[CrossRef]

I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
[CrossRef]

2002 (1)

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express 10(21), 1167–1172 (2002).
[PubMed]

2000 (2)

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

W. Schulz and R. Poprawe, “Manufacturing with novel high-power diode lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 696–705 (2000).
[CrossRef]

1998 (1)

C. Roychoudhuri, “Desk-top manufacturing using diode lasers,” Proc. SPIE 3274, 162–170 (1998).
[CrossRef]

Adamiec, P.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

Anderegg, J.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Andrusyak, O.

O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, “Beam combining of lasers with high spectral density using volume Bragg gratings,” Opt. Commun. 282(13), 2560–2563 (2009).
[CrossRef]

O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
[CrossRef]

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

Asman, C.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Botez, D.

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

Braiman, Y.

B. Liu, Y. Liu, and Y. Braiman, “Coherent beam combining of high power broad-area laser diode array with a closed-V-shape external Talbot cavity,” Opt. Express 18(7), 7361–7368 (2010).
[CrossRef] [PubMed]

Brosnan, S.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Brückner, F.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Bugge, F.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

Chann, B.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Cheung, E.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Chi, M.

B. Thestrup, M. Chi, B. Sass, and P. M. Petersen, “High brightness laser source based on polarization coupling of two diode lasers with asymmetric feedback,” Appl. Phys. Lett. 82(5), 680–682 (2003).
[CrossRef]

Choi, H. K.

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

Ciapurin, I.

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

Ciapurin, I. V.

I. V. Ciapurin, L. B. Glebov, and V. I. Smirnov, “Modeling of phase volume diffractive gratings, part 1: transmitting sinusoidal uniform gratings,” Opt. Eng. 45(1), 015802 (2006).
[CrossRef]

I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
[CrossRef]

Clausnitzer, T.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Cook, C. C.

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

Daneu, V.

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

Davidson, N.

A. A. Ishaaya, N. Davidson, and A. A. Friesem, “Passive laser beam combining with intracavity interferometric combiners,” IEEE Sel. Top. Quantum Electron. 15(2), 301–311 (2009).
[CrossRef]

Dittmar, F.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

Donnelly, J. P.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Earles, T.

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

Eberhardt, R.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Erbert, G.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

Fan, T. Y.

T. Y. Fan, “Laser beam combining for high-power, high-radiance sources,” IEEE J. Sel. Top. Quantum Electron. 11(3), 567–577 (2005).
[CrossRef]

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

Fricke, J.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

Friesem, A. A.

A. A. Ishaaya, N. Davidson, and A. A. Friesem, “Passive laser beam combining with intracavity interferometric combiners,” IEEE Sel. Top. Quantum Electron. 15(2), 301–311 (2009).
[CrossRef]

Glebov, L.

O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, “Beam combining of lasers with high spectral density using volume Bragg gratings,” Opt. Commun. 282(13), 2560–2563 (2009).
[CrossRef]

O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
[CrossRef]

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

Glebov, L. B.

I. V. Ciapurin, L. B. Glebov, and V. I. Smirnov, “Modeling of phase volume diffractive gratings, part 1: transmitting sinusoidal uniform gratings,” Opt. Eng. 45(1), 015802 (2006).
[CrossRef]

I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
[CrossRef]

Glebova, L. N.

I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
[CrossRef]

Goodno, G.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Goodnough, T.

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

Gowin, M.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Goyal, A. K.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Guo, D.

D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
[CrossRef]

Guo, Y.

D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
[CrossRef]

Hammons, D.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Harris, C. T.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Hasler, K.-H.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

Hoffman, P. R.

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

Honea, E.

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

Huang, R. K.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Injeyan, H.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Ishaaya, A. A.

A. A. Ishaaya, N. Davidson, and A. A. Friesem, “Passive laser beam combining with intracavity interferometric combiners,” IEEE Sel. Top. Quantum Electron. 15(2), 301–311 (2009).
[CrossRef]

Jensen, O. B.

D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
[CrossRef] [PubMed]

Jonsson, J.

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

Jung, M.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Kanskar, M.

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

Knigge, A.

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

Komine, H.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Lal, B.

H. Shabir, B. Lal, and M. Rafat, “A comparative study of the properties of terbium aluminum garnet powder sintered in air, vacuum and by laser irradiation,” Ceram. Int. 36(1), 365–369 (2010).
[CrossRef]

Liau, Z. L.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Limpert, J.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Liu, A.

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

Liu, B.

B. Liu, Y. Liu, and Y. Braiman, “Coherent beam combining of high power broad-area laser diode array with a closed-V-shape external Talbot cavity,” Opt. Express 18(7), 7361–7368 (2010).
[CrossRef] [PubMed]

Liu, Y.

B. Liu, Y. Liu, and Y. Braiman, “Coherent beam combining of high power broad-area laser diode array with a closed-V-shape external Talbot cavity,” Opt. Express 18(7), 7361–7368 (2010).
[CrossRef] [PubMed]

Loftus, T. H.

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

Long, W.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Ludewigt, K.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Ma, G.

D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
[CrossRef]

Mawst, L.

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

McClellan, M.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

McNaught, S.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Missaggia, L. J.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Norsen, M.

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

Ostendorf, R.

D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
[CrossRef] [PubMed]

Peschel, T.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Petersen, P. M.

B. Thestrup, M. Chi, B. Sass, and P. M. Petersen, “High brightness laser source based on polarization coupling of two diode lasers with asymmetric feedback,” Appl. Phys. Lett. 82(5), 680–682 (2003).
[CrossRef]

Pittroff, W.

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

Poprawe, R.

W. Schulz and R. Poprawe, “Manufacturing with novel high-power diode lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 696–705 (2000).
[CrossRef]

Rafat, M.

H. Shabir, B. Lal, and M. Rafat, “A comparative study of the properties of terbium aluminum garnet powder sintered in air, vacuum and by laser irradiation,” Ceram. Int. 36(1), 365–369 (2010).
[CrossRef]

Redmond, S.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Ressel, P.

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

Rotar, V.

O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
[CrossRef]

Rotari, E. V.

I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
[CrossRef]

Roychoudhuri, C.

C. Roychoudhuri, “Desk-top manufacturing using diode lasers,” Proc. SPIE 3274, 162–170 (1998).
[CrossRef]

Royse, R.

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

Saitou, T.

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express 10(21), 1167–1172 (2002).
[PubMed]

Sanchez, A.

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

Sanchez-Rubio, A.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Sass, B.

B. Thestrup, M. Chi, B. Sass, and P. M. Petersen, “High brightness laser source based on polarization coupling of two diode lasers with asymmetric feedback,” Appl. Phys. Lett. 82(5), 680–682 (2003).
[CrossRef]

Schmidt, O.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Schreiber, T.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Schulz, W.

W. Schulz and R. Poprawe, “Manufacturing with novel high-power diode lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 696–705 (2000).
[CrossRef]

Sekiguchi, T.

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express 10(21), 1167–1172 (2002).
[PubMed]

Sevian, A.

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

Shabir, H.

H. Shabir, B. Lal, and M. Rafat, “A comparative study of the properties of terbium aluminum garnet powder sintered in air, vacuum and by laser irradiation,” Ceram. Int. 36(1), 365–369 (2010).
[CrossRef]

Shirakawa, A.

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express 10(21), 1167–1172 (2002).
[PubMed]

Simpson, R.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Smirnov, V.

O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, “Beam combining of lasers with high spectral density using volume Bragg gratings,” Opt. Commun. 282(13), 2560–2563 (2009).
[CrossRef]

O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
[CrossRef]

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

Smirnov, V. I.

I. V. Ciapurin, L. B. Glebov, and V. I. Smirnov, “Modeling of phase volume diffractive gratings, part 1: transmitting sinusoidal uniform gratings,” Opt. Eng. 45(1), 015802 (2006).
[CrossRef]

I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
[CrossRef]

Sollee, J.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Staske, R.

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

Stiers, E.

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

Sumpf, B.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

ten Have, E.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Thestrup, B.

D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
[CrossRef] [PubMed]

B. Thestrup, M. Chi, B. Sass, and P. M. Petersen, “High brightness laser source based on polarization coupling of two diode lasers with asymmetric feedback,” Appl. Phys. Lett. 82(5), 680–682 (2003).
[CrossRef]

Thomas, A. M.

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

Trankle, G.

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

Tränkle, G.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

Tsybin, I.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Tünnermann, A.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Turner, G. W.

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

Ueda, K.

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express 10(21), 1167–1172 (2002).
[PubMed]

Venus, G.

O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
[CrossRef]

O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, “Beam combining of lasers with high spectral density using volume Bragg gratings,” Opt. Commun. 282(13), 2560–2563 (2009).
[CrossRef]

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

Vijayakumar, D.

D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
[CrossRef] [PubMed]

Weber, M.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Weiss, S.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Wenzel, H.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

Westphalen, T.

D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
[CrossRef] [PubMed]

Weyers, M.

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

Wickham, M.

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

Wirth, C.

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

Wu, D.

D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
[CrossRef]

Zhang, Q.

D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
[CrossRef]

Zorn, M.

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

Appl. Phys. Lett. (1)

B. Thestrup, M. Chi, B. Sass, and P. M. Petersen, “High brightness laser source based on polarization coupling of two diode lasers with asymmetric feedback,” Appl. Phys. Lett. 82(5), 680–682 (2003).
[CrossRef]

Ceram. Int. (1)

H. Shabir, B. Lal, and M. Rafat, “A comparative study of the properties of terbium aluminum garnet powder sintered in air, vacuum and by laser irradiation,” Ceram. Int. 36(1), 365–369 (2010).
[CrossRef]

Electron. Lett. (2)

A. Knigge, G. Erbert, J. Jonsson, W. Pittroff, R. Staske, B. Sumpf, M. Weyers, and G. Trankle, “Passively cooled 940 nm laser bars with 73% wall-plug efficiency at 70 W and 25°C,” Electron. Lett. 41(5), 250–251 (2005).
[CrossRef]

M. Kanskar, T. Earles, T. Goodnough, E. Stiers, D. Botez, and L. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (3)

G. Goodno, C. Asman, J. Anderegg, S. Brosnan, E. Cheung, D. Hammons, H. Injeyan, H. Komine, W. Long, M. McClellan, S. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. Weiss, and M. Wickham, “Brightness-Scaling Potential of Actively Phase-Locked Solid-State Laser Arrays,” IEEE J. Sel. Top. Quantum Electron. 13(3), 460–472 (2007).
[CrossRef]

T. Y. Fan, “Laser beam combining for high-power, high-radiance sources,” IEEE J. Sel. Top. Quantum Electron. 11(3), 567–577 (2005).
[CrossRef]

W. Schulz and R. Poprawe, “Manufacturing with novel high-power diode lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 696–705 (2000).
[CrossRef]

IEEE Photon. Technol. Lett. (1)

K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, and G. Tränkle, “5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality,” IEEE Photon. Technol. Lett. 20(19), 1648–1650 (2008).
[CrossRef]

IEEE Sel. Top. Quantum Electron. (3)

O. Andrusyak, V. Smirnov, G. Venus, V. Rotar, and L. Glebov, “Spectral Combining and Coherent Coupling of Lasers by Volume Bragg Gratings,” IEEE Sel. Top. Quantum Electron. 15(2), 344–353 (2009).
[CrossRef]

B. Sumpf, K.-H. Hasler, P. Adamiec, F. Bugge, F. Dittmar, J. Fricke, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “High-Brightness Quantum Well Tapered Lasers,” IEEE Sel. Top. Quantum Electron. 15(3), 1009–1020 (2009).
[CrossRef]

A. A. Ishaaya, N. Davidson, and A. A. Friesem, “Passive laser beam combining with intracavity interferometric combiners,” IEEE Sel. Top. Quantum Electron. 15(2), 301–311 (2009).
[CrossRef]

Opt. Commun. (1)

O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, “Beam combining of lasers with high spectral density using volume Bragg gratings,” Opt. Commun. 282(13), 2560–2563 (2009).
[CrossRef]

Opt. Eng. (1)

I. V. Ciapurin, L. B. Glebov, and V. I. Smirnov, “Modeling of phase volume diffractive gratings, part 1: transmitting sinusoidal uniform gratings,” Opt. Eng. 45(1), 015802 (2006).
[CrossRef]

Opt. Express (4)

D. Vijayakumar, O. B. Jensen, R. Ostendorf, T. Westphalen, and B. Thestrup, “Spectral beam combining of a 980 nm tapered diode laser bar,” Opt. Express 18(2), 893–898 (2010).
[CrossRef] [PubMed]

C. Wirth, O. Schmidt, I. Tsybin, T. Schreiber, T. Peschel, F. Brückner, T. Clausnitzer, J. Limpert, R. Eberhardt, A. Tünnermann, M. Gowin, E. ten Have, K. Ludewigt, and M. Jung, “2 kW incoherent beam combining of four narrow-linewidth photonic crystal fiber amplifiers,” Opt. Express 17(3), 1178–1183 (2009).
[CrossRef] [PubMed]

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express 10(21), 1167–1172 (2002).
[PubMed]

B. Liu, Y. Liu, and Y. Braiman, “Coherent beam combining of high power broad-area laser diode array with a closed-V-shape external Talbot cavity,” Opt. Express 18(7), 7361–7368 (2010).
[CrossRef] [PubMed]

Opt. Lasers Eng. (1)

D. Wu, Q. Zhang, G. Ma, Y. Guo, and D. Guo, “Laser bending of brittle materials,” Opt. Lasers Eng. 48(4), 405–410 (2010).
[CrossRef]

Opt. Lett. (4)

T. H. Loftus, A. Liu, P. R. Hoffman, A. M. Thomas, M. Norsen, R. Royse, and E. Honea, “522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality,” Opt. Lett. 32(4), 349–351 (2007).
[CrossRef] [PubMed]

A. Sevian, O. Andrusyak, I. Ciapurin, V. Smirnov, G. Venus, and L. Glebov, “Efficient power scaling of laser radiation by spectral beam combining,” Opt. Lett. 33(4), 384–386 (2008).
[CrossRef] [PubMed]

V. Daneu, A. Sanchez, T. Y. Fan, H. K. Choi, G. W. Turner, and C. C. Cook, “Spectral beam combining of a broad-stripe diode laser array in an external cavity,” Opt. Lett. 25(6), 405–407 (2000).
[CrossRef]

B. Chann, R. K. Huang, L. J. Missaggia, C. T. Harris, Z. L. Liau, A. K. Goyal, J. P. Donnelly, T. Y. Fan, A. Sanchez-Rubio, and G. W. Turner, “Near-diffraction-limited diode laser arrays by wavelength beam combining,” Opt. Lett. 30(16), 2104–2106 (2005).
[CrossRef] [PubMed]

Proc. SPIE (2)

I. V. Ciapurin, L. B. Glebov, L. N. Glebova, V. I. Smirnov, and E. V. Rotari, “Incoherent combining of 100-W Yb-fiber laser beams by PTR Bragg grating,” Proc. SPIE 4974, 209–219 (2003).
[CrossRef]

C. Roychoudhuri, “Desk-top manufacturing using diode lasers,” Proc. SPIE 3274, 162–170 (1998).
[CrossRef]

Other (4)

M. Behringer, “High-Power Diode Laser Technology and Characteristics,” in High Power Diode Lasers: Technology and Applications, F. Bachmann, P. Loosen, and R. Poprawe, ed., (Springer, Berlin, 2007)

T. H. Loftus, A. M. Thomas, M. Norsen, J. Minelly, P. Jones, E. Honea, S. A. Shakir, S. Hendow, W. Culver, B. Nelson, and M. Fitelson, “Four-Channel, High Power, Passively Phase Locked Fiber Array,” in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2008), paper WA4.

O. Svelto, S. Longhi, G. Della Valle, S. Kück, G. Huber, M. Pollnau, H. Hillmer, S. Hansmann, R. Engelbrecht, H. Brand, J. Kaiser, A. B. Peterson, R. Malz, S. Steinberg, G. Marowsky, U. Brinkmann, D. Lot, A. Borsutzky, H. Wächter, M. W. Sigrist, E. Saldin, E. Schneidmiller, M. Yurkov, K. Midorikawa, J. Hein, R. Sauerbrey, and J. Helmcke, “Lasers and Coherent Light Sources,” in Springer Handbook of Lasers and Optics, F. Träger, ed., (Springer Science and Business Media, New York, 2007).

U. Brauch, P. Loosen, and H. Opower, “High-Power Diode Lasers for Direct Applications,” in High Power Diode Lasers: Fundamentals, Technology, Applications, R. Diehl, ed., (Springer, Berlin, 2000).

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Figures (6)

Fig. 1
Fig. 1

Sketch of the spectral beam combining setup based on two DBR-tapered diode lasers and a reflecting volume Bragg grating. The beam transmitting the grating is indicated by dashes, the diffracted beam by dots. The arrow signifies the propagation of the combined beam.

Fig. 2
Fig. 2

(a) Power current characteristics of DBR-tapered diode lasers at 300 mA to the ridge section and operating temperatures of 20 °C. (b) Optical spectra of the lasers at 14 A to the tapered section.

Fig. 3
Fig. 3

(a) Wavelength versus injection current of DBR-tapered diode lasers at 300 mA to the ridge section and operating temperatures of 20 °C. (b) Wavelength versus temperature of the lasers at 14 A to the tapered section.

Fig. 4
Fig. 4

(a) Output power of the individual lasers and the combined beam at 300 mA to the ridge section and different injection currents to the tapered section. The angles of incidence and the laser temperatures are adjusted for maximum diffraction and transmission at each current value. Star symbols indicate the corresponding combining efficiency achieved at each current. (b) Optical spectrum of the combined output beam at 14 A to the tapered section.

Fig. 5
Fig. 5

Beam caustics of the combined beam at 300 mA to the ridge section and 14 A to the tapered section.

Fig. 6
Fig. 6

Beam profiles of the combined beam at 300 mA to the ridge section and 14 A to the tapered section. (a) Near field profile in the fast axis. (b) Near field profile in the slow axis. (c) Far field profile in the fast axis (d) Far field profile in the slow axis.

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