Abstract

We demonstrate spectral beam combining of a 980 nm tapered diode laser bar. The combined beam from 12 tapered emitters on the bar yielded an output power of 9.3 W at 30 A of operating current. An M2 value of 5.3 has been achieved along the slow axis. This value is close to that of a free running single tapered emitter on the bar at the same current level. The overall spectral beam combining efficiency was measured to be 63%.

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  1. M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
    [CrossRef]
  2. C. Scholz, K. Boucke, R. Poprawe, M. T. Kelemen, J. Weber, M. Mikulla, and G. Weimann, “Comparison between 50 W tapered laser arrays and tapered single emitters”, High Power Diode Laser Technology and Applications IV, Proceedings of the SPIE 6104, 61040G.1–61040G.8 (2006)
  3. 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]
  4. J. T. Gopinath, B. Chann, T. Y. Fan, and A. Sanchez-Rubio, “1450-nm high-brightness wavelength-beam combined diode laser array,” Opt. Express 16(13), 9405–9410 (2008).
    [CrossRef] [PubMed]
  5. 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]
  6. A. Jechow, M. Lichtner, R. Menzel, M. Radziunas, D. Skoczowsky, and A. G. Vladimirov, “Stripe-array diode-laser in an off-axis external cavity: theory and experiment,” Opt. Express 17(22), 19599–19604 (2009).
    [CrossRef] [PubMed]
  7. A. Jechow, V. Raab, and R. Menzel, “High cw power using an external cavity for spectral beam combining of diode laser-bar emission,” Appl. Opt. 45(15), 3545–3547 (2006).
    [CrossRef] [PubMed]
  8. O. B. Jensen, B. Thestrup, P. E. Andersen, and P. M. Petersen, “Near-diffraction-limited segmented broad area diode laser based on off-axis spectral beam combining,” Appl. Phys. B 83(2), 225–228 (2006).
    [CrossRef]
  9. D. Vijayakumar, O. B. Jensen, and B. Thestrup, “980 nm high brightness external cavity broad area diode laser bar,” Opt. Express 17(7), 5684–5690 (2009).
    [CrossRef] [PubMed]
  10. D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
    [CrossRef]
  11. D. Paboeuf, G. Lucas-Leclin, N. Michel, M. Calligaro, M. Krakowski, and P. Georges, “Quasi-diffraction limited emission from an array of tapered laser diodes in volume Bragg grating external cavities”, Proc. The European Conference on Lasers and Electro-Optics, Munich, June 2009, paper CB 12.5.
  12. P. Adamiec, B. Sumpf, I. Rüdiger, J. Fricke, K. H. Hasler, P. Ressel, H. Wenzel, M. Zorn, G. Erbert, and G. Tränkle, “Tapered lasers emitting at 650 nm with 1 W output power with nearly diffraction-limited beam quality,” Opt. Lett. 34(16), 2456–2458 (2009).
    [CrossRef] [PubMed]

2009 (3)

2008 (2)

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

J. T. Gopinath, B. Chann, T. Y. Fan, and A. Sanchez-Rubio, “1450-nm high-brightness wavelength-beam combined diode laser array,” Opt. Express 16(13), 9405–9410 (2008).
[CrossRef] [PubMed]

2006 (2)

A. Jechow, V. Raab, and R. Menzel, “High cw power using an external cavity for spectral beam combining of diode laser-bar emission,” Appl. Opt. 45(15), 3545–3547 (2006).
[CrossRef] [PubMed]

O. B. Jensen, B. Thestrup, P. E. Andersen, and P. M. Petersen, “Near-diffraction-limited segmented broad area diode laser based on off-axis spectral beam combining,” Appl. Phys. B 83(2), 225–228 (2006).
[CrossRef]

2005 (2)

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]

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

2000 (1)

Adamiec, P.

Andersen, P. E.

O. B. Jensen, B. Thestrup, P. E. Andersen, and P. M. Petersen, “Near-diffraction-limited segmented broad area diode laser based on off-axis spectral beam combining,” Appl. Phys. B 83(2), 225–228 (2006).
[CrossRef]

Bihlmann, G.

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Chann, B.

Choi, H. K.

Cook, C. C.

Daneu, V.

Donnelly, J. P.

Erbert, G.

Fan, T. Y.

Fricke, J.

Georges, P.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Gopinath, J. T.

Goyal, A. K.

Harris, C. T.

Hasler, K. H.

Huang, R. K.

Jechow, A.

Jensen, O. B.

D. Vijayakumar, O. B. Jensen, and B. Thestrup, “980 nm high brightness external cavity broad area diode laser bar,” Opt. Express 17(7), 5684–5690 (2009).
[CrossRef] [PubMed]

O. B. Jensen, B. Thestrup, P. E. Andersen, and P. M. Petersen, “Near-diffraction-limited segmented broad area diode laser based on off-axis spectral beam combining,” Appl. Phys. B 83(2), 225–228 (2006).
[CrossRef]

Kaufel, G.

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Kelemen, M. T.

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Krakowski, M.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Larkins, E.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Liau, Z. L.

Lichtner, M.

Lim, J.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Lucas-Leclin, G.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Menzel, R.

Michel, N.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Mikulla, M.

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Missaggia, L. J.

Moritz, R.

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Paboeuf, D.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Petersen, P. M.

O. B. Jensen, B. Thestrup, P. E. Andersen, and P. M. Petersen, “Near-diffraction-limited segmented broad area diode laser based on off-axis spectral beam combining,” Appl. Phys. B 83(2), 225–228 (2006).
[CrossRef]

Raab, V.

Radziunas, M.

Ressel, P.

Rüdiger, I.

Sanchez, A.

Sanchez-Rubio, A.

Skoczowsky, D.

Sujecki, S.

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Sumpf, B.

Thestrup, B.

D. Vijayakumar, O. B. Jensen, and B. Thestrup, “980 nm high brightness external cavity broad area diode laser bar,” Opt. Express 17(7), 5684–5690 (2009).
[CrossRef] [PubMed]

O. B. Jensen, B. Thestrup, P. E. Andersen, and P. M. Petersen, “Near-diffraction-limited segmented broad area diode laser based on off-axis spectral beam combining,” Appl. Phys. B 83(2), 225–228 (2006).
[CrossRef]

Tränkle, G.

Turner, G. W.

Vijayakumar, D.

Vladimirov, A. G.

Weber, J.

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Weimann, G.

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Wenzel, H.

Zorn, M.

Appl. Opt. (1)

Appl. Phys. B (1)

O. B. Jensen, B. Thestrup, P. E. Andersen, and P. M. Petersen, “Near-diffraction-limited segmented broad area diode laser based on off-axis spectral beam combining,” Appl. Phys. B 83(2), 225–228 (2006).
[CrossRef]

Appl. Phys. Lett. (1)

D. Paboeuf, G. Lucas-Leclin, P. Georges, N. Michel, M. Krakowski, J. Lim, S. Sujecki, and E. Larkins, “Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating,” Appl. Phys. Lett. 93(21), 211102 (2008).
[CrossRef]

Electron. Lett. (1)

M. T. Kelemen, J. Weber, G. Kaufel, G. Bihlmann, R. Moritz, M. Mikulla, and G. Weimann, “Tapered diode lasers at 976nm with 8W nearly diffraction limited output power,” Electron. Lett. 41(18), 1011–1013 (2005).
[CrossRef]

Opt. Express (3)

Opt. Lett. (3)

Other (2)

D. Paboeuf, G. Lucas-Leclin, N. Michel, M. Calligaro, M. Krakowski, and P. Georges, “Quasi-diffraction limited emission from an array of tapered laser diodes in volume Bragg grating external cavities”, Proc. The European Conference on Lasers and Electro-Optics, Munich, June 2009, paper CB 12.5.

C. Scholz, K. Boucke, R. Poprawe, M. T. Kelemen, J. Weber, M. Mikulla, and G. Weimann, “Comparison between 50 W tapered laser arrays and tapered single emitters”, High Power Diode Laser Technology and Applications IV, Proceedings of the SPIE 6104, 61040G.1–61040G.8 (2006)

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Figures (5)

Fig. 1
Fig. 1

Schematic view of a tapered diode laser with a ridge section length L1 and a taper section length L2.

Fig. 2
Fig. 2

Experimental setup of the spectral beam combining of the tapered diode laser bar. L1 is a 100 mm focal length cylindrical slow axis collimation lens and L2 is a 100 mm focal length cylindrical fast axis focusing lens.

Fig. 3
Fig. 3

Light current characteristics of the tapered diode laser bar in the free running mode (squares) and beam combined mode (dots).

Fig. 4
Fig. 4

Wavelength spectrum of the combined beam

Fig. 5
Fig. 5

(a) Profile of the combined beam in the slow axis direction at the focus of a 100 mm achromatic lens. The inset graph shows the caustic of the slow axis of the combined beam. The solid line represents the numerical fit to the experimental data. (b) Far field profile of the combined beam in the slow axis direction.

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