Abstract

Passive coherent combination of several discrete low power laser diodes is a promising way to overcome the issue of degrading beam quality when scaling single emitters to > 10 W output power. Such systems would be an efficient alternative to current high power sources, yet they suffer from fatal coherence loss when operated well above threshold. We present a new way to obtain detailed coherence information for laser diode arrays using a spatial light modulator to help identify the underlying decoherence processes. Reconstruction tests of the emitted far-field distribution are conducted to evaluate the performance of our setup.

© 2017 Optical Society of America

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References

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  1. P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
    [Crossref]
  2. M. Kanskar, T. Earles, T. J. Goodnough, E. Stiers, D. Botez, and L. J. Mawst, “73% CW power conversion efficiency at 50 W from 970 nm diode laser bars,” Electron. Lett. 41(5), 245–247 (2005).
    [Crossref]
  3. K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
    [Crossref] [PubMed]
  4. P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
    [Crossref]
  5. C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
    [Crossref]
  6. T. Y. Fan, “Laser beam combining for high-power, high-radiance sources,” IEEE J. Sel. Top. Quantum Electron. 11(3), 978–983 (2005).
    [Crossref]
  7. J. Montoya, S. J. Augst, K. Creedon, J. Kansky, T. Y. Fan, and A. Sanchez-Rubio, “External cavity beam combining of 21 semiconductor lasers using SPGD,” Appl. Opt. 51(11), 1724–1728 (2012).
    [Crossref] [PubMed]
  8. C. J. Corcoran and F. Durville, “Passive coherent combination of a diode laser array with 35 elements,” Opt. Express 22(7), 8402–8425 (2014).
    [Crossref]
  9. C. K. Hitzenberger, M. Danner, W. Drexler, and A. F. Fercher, “Measurement of the spatial coherence of superluminescent diodes,” J. Mod. Opt. 46(12), 1763–1774 (1999).
    [Crossref]
  10. N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
    [Crossref]
  11. Y. Mejía and A. I. González, “Measuring spatial coherence by using a mask with multiple apertures,” Opt. Commun. 273(2), 428–434 (2007).
    [Crossref]
  12. H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).
  13. M. Niebuhr, C. Zink, A. Jechow, A. Heuer, L. B. Glebov, and R. Menzel, “Mode stabilization of a laterally structured broad area diode laser using an external volume Bragg grating,” Opt. Express 23(9), 12394–12400 (2015).
    [Crossref] [PubMed]
  14. J. K. Butler, D. E. Ackley, and D. Botez, “Coupled-mode analysis of phase-locked injection laser arrays,” Appl. Phys. Lett. 44(3), 293–295 (1984).
    [Crossref]
  15. P. P. Baveja, A. M. Kaplan, D. N. Maywar, and G. P. Agrawal, “Pulse amplification in semiconductor optical amplifiers with ultrafast gain-recovery times,” Proc. SPIE 7598, 759817 (2010).
    [Crossref]
  16. G. P. Agrawal and C. M. Bowden, “Concept of linewidth enhancement factor in semiconductor lasers: its usefulness and limitations,” IEEE Photonics Technol. Lett. 5(6), 640–642 (1993).
    [Crossref]

2015 (2)

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

M. Niebuhr, C. Zink, A. Jechow, A. Heuer, L. B. Glebov, and R. Menzel, “Mode stabilization of a laterally structured broad area diode laser using an external volume Bragg grating,” Opt. Express 23(9), 12394–12400 (2015).
[Crossref] [PubMed]

2014 (2)

C. J. Corcoran and F. Durville, “Passive coherent combination of a diode laser array with 35 elements,” Opt. Express 22(7), 8402–8425 (2014).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

2012 (1)

2010 (2)

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

P. P. Baveja, A. M. Kaplan, D. N. Maywar, and G. P. Agrawal, “Pulse amplification in semiconductor optical amplifiers with ultrafast gain-recovery times,” Proc. SPIE 7598, 759817 (2010).
[Crossref]

2009 (1)

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

2007 (1)

Y. Mejía and A. I. González, “Measuring spatial coherence by using a mask with multiple apertures,” Opt. Commun. 273(2), 428–434 (2007).
[Crossref]

2005 (2)

T. Y. Fan, “Laser beam combining for high-power, high-radiance sources,” IEEE J. Sel. Top. Quantum Electron. 11(3), 978–983 (2005).
[Crossref]

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

1999 (1)

C. K. Hitzenberger, M. Danner, W. Drexler, and A. F. Fercher, “Measurement of the spatial coherence of superluminescent diodes,” J. Mod. Opt. 46(12), 1763–1774 (1999).
[Crossref]

1993 (1)

G. P. Agrawal and C. M. Bowden, “Concept of linewidth enhancement factor in semiconductor lasers: its usefulness and limitations,” IEEE Photonics Technol. Lett. 5(6), 640–642 (1993).
[Crossref]

1987 (1)

N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
[Crossref]

1984 (1)

J. K. Butler, D. E. Ackley, and D. Botez, “Coupled-mode analysis of phase-locked injection laser arrays,” Appl. Phys. Lett. 44(3), 293–295 (1984).
[Crossref]

Ackley, D. E.

J. K. Butler, D. E. Ackley, and D. Botez, “Coupled-mode analysis of phase-locked injection laser arrays,” Appl. Phys. Lett. 44(3), 293–295 (1984).
[Crossref]

Agrawal, G. P.

P. P. Baveja, A. M. Kaplan, D. N. Maywar, and G. P. Agrawal, “Pulse amplification in semiconductor optical amplifiers with ultrafast gain-recovery times,” Proc. SPIE 7598, 759817 (2010).
[Crossref]

G. P. Agrawal and C. M. Bowden, “Concept of linewidth enhancement factor in semiconductor lasers: its usefulness and limitations,” IEEE Photonics Technol. Lett. 5(6), 640–642 (1993).
[Crossref]

Augst, S. J.

Baveja, P. P.

P. P. Baveja, A. M. Kaplan, D. N. Maywar, and G. P. Agrawal, “Pulse amplification in semiconductor optical amplifiers with ultrafast gain-recovery times,” Proc. SPIE 7598, 759817 (2010).
[Crossref]

Blume, G.

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Botez, D.

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

J. K. Butler, D. E. Ackley, and D. Botez, “Coupled-mode analysis of phase-locked injection laser arrays,” Appl. Phys. Lett. 44(3), 293–295 (1984).
[Crossref]

Bowden, C. M.

G. P. Agrawal and C. M. Bowden, “Concept of linewidth enhancement factor in semiconductor lasers: its usefulness and limitations,” IEEE Photonics Technol. Lett. 5(6), 640–642 (1993).
[Crossref]

Bugge, F.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Butler, J. K.

J. K. Butler, D. E. Ackley, and D. Botez, “Coupled-mode analysis of phase-locked injection laser arrays,” Appl. Phys. Lett. 44(3), 293–295 (1984).
[Crossref]

Carlson, N. W.

N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
[Crossref]

Corcoran, C. J.

C. J. Corcoran and F. Durville, “Passive coherent combination of a diode laser array with 35 elements,” Opt. Express 22(7), 8402–8425 (2014).
[Crossref]

Creedon, K.

Crump, P.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Danner, M.

C. K. Hitzenberger, M. Danner, W. Drexler, and A. F. Fercher, “Measurement of the spatial coherence of superluminescent diodes,” J. Mod. Opt. 46(12), 1763–1774 (1999).
[Crossref]

Drexler, W.

C. K. Hitzenberger, M. Danner, W. Drexler, and A. F. Fercher, “Measurement of the spatial coherence of superluminescent diodes,” J. Mod. Opt. 46(12), 1763–1774 (1999).
[Crossref]

Durville, F.

C. J. Corcoran and F. Durville, “Passive coherent combination of a diode laser array with 35 elements,” Opt. Express 22(7), 8402–8425 (2014).
[Crossref]

Earles, T.

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

Erbert, G.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Evans, G. A.

N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
[Crossref]

Fan, T. Y.

Fassbender, W.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Feise, D.

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Fercher, A. F.

C. K. Hitzenberger, M. Danner, W. Drexler, and A. F. Fercher, “Measurement of the spatial coherence of superluminescent diodes,” J. Mod. Opt. 46(12), 1763–1774 (1999).
[Crossref]

Fiebig, C.

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Frevert, C.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Fricke, J.

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Glebov, L. B.

Goldstein, B.

N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
[Crossref]

González, A. I.

Y. Mejía and A. I. González, “Measuring spatial coherence by using a mask with multiple apertures,” Opt. Commun. 273(2), 428–434 (2007).
[Crossref]

Goodnough, T. J.

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

Hein, J.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Heuer, A.

Hitzenberger, C. K.

C. K. Hitzenberger, M. Danner, W. Drexler, and A. F. Fercher, “Measurement of the spatial coherence of superluminescent diodes,” J. Mod. Opt. 46(12), 1763–1774 (1999).
[Crossref]

Hösler, H.

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Hüslewerde, R.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Jechow, A.

Kanskar, M.

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

Kansky, J.

Kaplan, A. M.

P. P. Baveja, A. M. Kaplan, D. N. Maywar, and G. P. Agrawal, “Pulse amplification in semiconductor optical amplifiers with ultrafast gain-recovery times,” Proc. SPIE 7598, 759817 (2010).
[Crossref]

Kaspari, C.

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Knigge, S.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Körner, J.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Lotz, J.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Lurie, M.

N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
[Crossref]

Masin, V. J.

N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
[Crossref]

Mawst, L. J.

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

Maywar, D. N.

P. P. Baveja, A. M. Kaplan, D. N. Maywar, and G. P. Agrawal, “Pulse amplification in semiconductor optical amplifiers with ultrafast gain-recovery times,” Proc. SPIE 7598, 759817 (2010).
[Crossref]

Mejía, Y.

Y. Mejía and A. I. González, “Measuring spatial coherence by using a mask with multiple apertures,” Opt. Commun. 273(2), 428–434 (2007).
[Crossref]

Menzel, R.

Montoya, J.

Neukum, J.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Niebuhr, M.

Osten, W.

H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).

Partanen, H. S.

H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).

Paschke, K.

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Peterhänsel, S. C.

H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).

Pietrzak, A.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Pittrof, W.

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Pruss, C.

H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).

Sanchez-Rubio, A.

Sebastian, J.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Spießberger, S.

Stiers, E.

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

Tervo, J.

H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).

Töpfer, T.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Tränkle, G.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Turunen, J.

H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).

Uebernickel, M.

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Wenzel, H.

K. Paschke, S. Spießberger, C. Kaspari, D. Feise, C. Fiebig, G. Blume, H. Wenzel, A. Wicht, and G. Erbert, “High-power distributed Bragg reflector ridge-waveguide diode laser with very small spectral linewidth,” Opt. Lett. 35(3), 402–404 (2010).
[Crossref] [PubMed]

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

Wicht, A.

Zink, C.

Zorn, M.

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

Appl. Opt. (1)

Appl. Phys. Lett. (2)

J. K. Butler, D. E. Ackley, and D. Botez, “Coupled-mode analysis of phase-locked injection laser arrays,” Appl. Phys. Lett. 44(3), 293–295 (1984).
[Crossref]

N. W. Carlson, V. J. Masin, M. Lurie, B. Goldstein, and G. A. Evans, “Measurement of the coherence of a single-mode phase-locked diode laser array,” Appl. Phys. Lett. 51(9), 643–645 (1987).
[Crossref]

Electron. Lett. (1)

M. Kanskar, T. Earles, T. J. Goodnough, E. Stiers, D. Botez, and L. J. 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. (2)

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert, “High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation,” IEEE J. Sel. Top. Quantum Electron. 15(3), 978–983 (2009).
[Crossref]

T. Y. Fan, “Laser beam combining for high-power, high-radiance sources,” IEEE J. Sel. Top. Quantum Electron. 11(3), 978–983 (2005).
[Crossref]

IEEE Photonics Technol. Lett. (1)

G. P. Agrawal and C. M. Bowden, “Concept of linewidth enhancement factor in semiconductor lasers: its usefulness and limitations,” IEEE Photonics Technol. Lett. 5(6), 640–642 (1993).
[Crossref]

J. Mod. Opt. (1)

C. K. Hitzenberger, M. Danner, W. Drexler, and A. F. Fercher, “Measurement of the spatial coherence of superluminescent diodes,” J. Mod. Opt. 46(12), 1763–1774 (1999).
[Crossref]

Opt. Commun. (1)

Y. Mejía and A. I. González, “Measuring spatial coherence by using a mask with multiple apertures,” Opt. Commun. 273(2), 428–434 (2007).
[Crossref]

Opt. Express (2)

Opt. Lett. (1)

Proc. SPIE (3)

P. P. Baveja, A. M. Kaplan, D. N. Maywar, and G. P. Agrawal, “Pulse amplification in semiconductor optical amplifiers with ultrafast gain-recovery times,” Proc. SPIE 7598, 759817 (2010).
[Crossref]

P. Crump, C. Frevert, F. Bugge, S. Knigge, G. Erbert, G. Tränkle, A. Pietrzak, R. Hüslewerde, M. Zorn, J. Sebastian, J. Lotz, W. Fassbender, J. Neukum, J. Körner, J. Hein, and T. Töpfer, “Progress in high-energy-class diode laser pump sources,” Proc. SPIE 9348, 93480U (2015).
[Crossref]

P. Crump, C. Frevert, H. Hösler, F. Bugge, S. Knigge, W. Pittrof, G. Erbert, and G. Tränkle, “Cryogenic ultra-high power infrared diode laser bars,” Proc. SPIE 9002, 90021I (2014).
[Crossref]

Other (1)

H. S. Partanen, S. C. Peterhänsel, C. Pruss, W. Osten, J. Tervo, and J. Turunen, “Broad Area Laser Diode Coherence Measurement and Modeling,” 7th International Workshop on Advanced Optical Imaging and Metrology, 879–882 (2014).

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Figures (5)

Fig. 1
Fig. 1

(a) Schematic diagram of the polarizer and SLM combination which allows for the observation of the superposition of only 2 emitters. (b): Resulting far-field of two Huygens emitters as a simple double slit modell for phase differences of 0 (blue), π/2 (red) respectively π (green).

Fig. 2
Fig. 2

(a) Rendered layout of the experimental setup. (b) Close-up of the external cavity laser-diode arrangement.

Fig. 3
Fig. 3

Results for the inphase (left), antiphase (middle) and free-running (right) resonator system at Ipump = 1.25 · Ithr. Upper row: phase measurement; middle row: far-field reconstruction test; lower row: coherence matrix (× indicates unmeasured values).

Fig. 4
Fig. 4

Coherence matrices for the LD array operating in the inphase supermode at four different pump currents.

Fig. 5
Fig. 5

Exemplary coherence matrices and averaged mutual coherence trace. (a)/(b) exhibit additional coupling through the external resonator and show reduced nearest neighbor coherence, (c)/(d) show data from a feedback free measurements (internal coupling only).

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

I = ( sinc k d s l i t sin α 2 ) 2 diffr . envelope × ( I 1 + I 2 + 2 I 1 I 2 γ 12 cos k d d i s t sin α + Φ 2 ) interference
V = I m a x I m i n I m a x + I m i n = | γ 12 | 2 I 1 I 2 I 1 + I 2

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