Abstract

In extension to known concepts of wavelength-multiplexing diode laser arrays, a new external cavity is presented. The setup simultaneously improves the beam quality of each single emitter of a standard 25 emitter broad-area stripe laser bar and spectrally superimposes the 25 beams into one. By using this external resonator in an “off-axis” arrangement, beam qualities of Mslow               2<14 and Mfast              2<3 with optical powers in excess of 10  W in cw operation are obtained.

© 2006 Optical Society of America

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References

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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef] [PubMed]

2005 (1)

2004 (1)

2003 (1)

2002 (3)

2000 (1)

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

1994 (1)

1989 (1)

F. X. D'Amato, E. T. Siebert, and C. Roychoudhuri, " Coherent operation of an array of diode lasers using a spatial filter in a Talbot cavity," Appl. Phys. Lett. 55, 816- 818 ( 1989).
[CrossRef]

Aggarwal, R. L.

Augst, S. J.

Bochove, E. J.

E. J. Bochove, " Theory of spectral beam combining of fiber lasers," IEEE J. Quantum Electron. 38, 432- 445 ( 2002).
[CrossRef]

Chann, B.

Choi, H. H.

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

Cook, C. C.

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

D'Amato, F. X.

F. X. D'Amato, E. T. Siebert, and C. Roychoudhuri, " Coherent operation of an array of diode lasers using a spatial filter in a Talbot cavity," Appl. Phys. Lett. 55, 816- 818 ( 1989).
[CrossRef]

Daneu, V.

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

Donnelly, J. P.

Fan, T. Y.

Feinberg, J.

Gao, P. X.

Goyal, A. K.

Harris, C. T.

Huang, R. K.

Kann, H.

Liau, Z. L.

MacCormack, S.

Menzel, R.

Missaggia, L. J.

Raab, V.

Roychoudhuri, C.

F. X. D'Amato, E. T. Siebert, and C. Roychoudhuri, " Coherent operation of an array of diode lasers using a spatial filter in a Talbot cavity," Appl. Phys. Lett. 55, 816- 818 ( 1989).
[CrossRef]

Sanchez, A.

S. J. Augst, A. K. Goyal, R. L. Aggarwal, T. Y. Fan, and A. Sanchez, " Wavelength beam combining of ytterbium fiber lasers," Opt. Lett. 28, 1510- 1512 ( 2003).
[CrossRef]

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

Sanchez-Rubio, A.

Shinoda, K.

Siebert, E. T.

F. X. D'Amato, E. T. Siebert, and C. Roychoudhuri, " Coherent operation of an array of diode lasers using a spatial filter in a Talbot cavity," Appl. Phys. Lett. 55, 816- 818 ( 1989).
[CrossRef]

Skoczowsky, D.

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, 2104- 2106 ( 2005).
[CrossRef] [PubMed]

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

Zheng, Y.

Appl. Phys. Lett. (1)

F. X. D'Amato, E. T. Siebert, and C. Roychoudhuri, " Coherent operation of an array of diode lasers using a spatial filter in a Talbot cavity," Appl. Phys. Lett. 55, 816- 818 ( 1989).
[CrossRef]

IEEE J. Quantum Electron. (1)

E. J. Bochove, " Theory of spectral beam combining of fiber lasers," IEEE J. Quantum Electron. 38, 432- 445 ( 2002).
[CrossRef]

Op. Lett. (1)

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

Opt. Lett. (6)

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Figures (4)

Fig. 1
Fig. 1

Sketch of the resonator setup.

Fig. 2
Fig. 2

Spectrum of outcoupled beam at 8 W total output power.

Fig. 3
Fig. 3

Caustic of the slow-axis beam. The hyperbolic fit (second moment) yields M slow 2 = 12 at a total output power of 9.5 W.

Fig. 4
Fig. 4

Optical output power of five different laser bars (1–5).

Equations (1)

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Δ λ = l g sin [ arcsin ( λ g 2 ) + arcsin ( b f ) ] λ 2 .

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