Abstract

We demonstrate the spectral beam combining of a diode laser stack, which contains three 970nm Mini-Bars along the fast-axis direction, in an external cavity. At the pump current of 60 A, the output power of 127 W, the spectral bandwidth of 12 nm and the Electro-optical conversion efficiency of 48.35% are achieved. The measured beam qualities after the spectral beam combining are M2 ≈10.2 along the slow axis and M2 ≈11.5 along the fast axis. Under a maximum injection current of 75A, the laser output power of more than 159W is achieved. The beam quality deteriorated slightly with the rising of the current from 60A to 75A, but it is enough to be coupled into a 50µm core / 0.22NA fiber.

© 2015 Optical Society of America

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References

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  1. C. M. Stickley, M. E. Filipkowski and E. Parra, “Super High Efficiency Diode Sources (SHEDS) and Architecture for Diode High Energy Laser Systems (ADHELS),” An Overview in Advanced Solid-State Photonics, TuA1 (2006).
    [Crossref]
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    [Crossref]
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    [Crossref] [PubMed]
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    [Crossref] [PubMed]
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    [Crossref] [PubMed]
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    [Crossref]
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    [Crossref]
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    [Crossref]
  11. 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).
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    [Crossref] [PubMed]

2014 (2)

Z. Zhu, L. Gou, M. Jiang, Y. Hui, H. Lei, and Q. Li, “High beam quality in two directions and high efficiency output of a diode laser array by spectral-beam-combining,” Opt. Express 22(15), 17804–17809 (2014).
[Crossref] [PubMed]

C. Zink, N. Werner, A. Jechow, A. Heuer, and R. Menzel, “Multi-wavelength operation of a single broad area diode laser by spectral beam combining,” IEEE Photonics Technol. Lett. 26(3), 253–256 (2014).
[Crossref]

2013 (1)

2012 (2)

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

Y. Xiao, F. Brunet, M. Kanskar, M. Faucher, A. Wetter, and N. Holehouse, “1-kilowatt CW all-fiber laser oscillator pumped with wavelength-beam-combined diode stacks,” Opt. Express 20(3), 3296–3301 (2012).
[Crossref] [PubMed]

2010 (1)

2009 (1)

2008 (1)

2007 (2)

F. Bachmann, “Goals and status of the German National Research Initiative BRIOLAS (brilliant diode lasers),” Proc. SPIE 6456, 645608 (2007).
[Crossref]

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

2000 (1)

Bachmann, F.

F. Bachmann, “Goals and status of the German National Research Initiative BRIOLAS (brilliant diode lasers),” Proc. SPIE 6456, 645608 (2007).
[Crossref]

Brunet, F.

Burgess, J.

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

Chann, B.

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[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]

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Choi, H. K.

Cook, C. C.

Daneu, V.

Donnelly, J. P.

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Fan, T. Y.

Faucher, M.

Fu, X.

Glenn, J. D.

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

Gopinath, J. T.

Gou, L.

Goyal, A. K.

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Harris, C. T.

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Heuer, A.

C. Zink, N. Werner, A. Jechow, A. Heuer, and R. Menzel, “Multi-wavelength operation of a single broad area diode laser by spectral beam combining,” IEEE Photonics Technol. Lett. 26(3), 253–256 (2014).
[Crossref]

Holehouse, N.

Huang, R. K.

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Hui, Y.

Jechow, A.

C. Zink, N. Werner, A. Jechow, A. Heuer, and R. Menzel, “Multi-wavelength operation of a single broad area diode laser by spectral beam combining,” IEEE Photonics Technol. Lett. 26(3), 253–256 (2014).
[Crossref]

Jensen, O. B.

Jiang, M.

Kaiman, M.

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

Kanskar, M.

Lei, H.

Li, Q.

Liu, Y.

Menzel, R.

C. Zink, N. Werner, A. Jechow, A. Heuer, and R. Menzel, “Multi-wavelength operation of a single broad area diode laser by spectral beam combining,” IEEE Photonics Technol. Lett. 26(3), 253–256 (2014).
[Crossref]

Miao, G.

Missaggia, L. J.

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Ostendorf, R.

Overman, R.

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

Peng, H.

Qin, L.

Sanchez, A.

Sanchez-Rubio, A.

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]

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Tayebati, P.

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

Thestrup, B.

Turner, G. W.

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

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] [PubMed]

Vijayakumar, D.

Wang, L.

Werner, N.

C. Zink, N. Werner, A. Jechow, A. Heuer, and R. Menzel, “Multi-wavelength operation of a single broad area diode laser by spectral beam combining,” IEEE Photonics Technol. Lett. 26(3), 253–256 (2014).
[Crossref]

Westphalen, T.

Wetter, A.

Xiao, Y.

Zhang, J.

Zhu, Z.

Zink, C.

C. Zink, N. Werner, A. Jechow, A. Heuer, and R. Menzel, “Multi-wavelength operation of a single broad area diode laser by spectral beam combining,” IEEE Photonics Technol. Lett. 26(3), 253–256 (2014).
[Crossref]

IEEE Photonics Technol. Lett. (2)

C. Zink, N. Werner, A. Jechow, A. Heuer, and R. Menzel, “Multi-wavelength operation of a single broad area diode laser by spectral beam combining,” IEEE Photonics Technol. Lett. 26(3), 253–256 (2014).
[Crossref]

R. K. Huang, B. Chann, L. J. Missaggia, J. P. Donnelly, C. T. Harris, G. W. Turner, A. K. Goyal, T. Y. Fan, and A. Sanchez-Rubio, “High-brightness wavelength beam combined semiconductor laser diode arrays,” IEEE Photonics Technol. Lett. 19(4), 253–256 (2007).
[Crossref]

Opt. Express (6)

Opt. Lett. (1)

Proc. SPIE (2)

R. K. Huang, B. Chann, J. Burgess, M. Kaiman, R. Overman, J. D. Glenn, and P. Tayebati, “Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers,” Proc. SPIE 8241, 824102 (2012).
[Crossref]

F. Bachmann, “Goals and status of the German National Research Initiative BRIOLAS (brilliant diode lasers),” Proc. SPIE 6456, 645608 (2007).
[Crossref]

Other (1)

C. M. Stickley, M. E. Filipkowski and E. Parra, “Super High Efficiency Diode Sources (SHEDS) and Architecture for Diode High Energy Laser Systems (ADHELS),” An Overview in Advanced Solid-State Photonics, TuA1 (2006).
[Crossref]

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Figures (5)

Fig. 1
Fig. 1 Schematic of SBC with external cavity feedback. FAC: fast axis collimating lens. SAC: slow axis collimating lens.
Fig. 2
Fig. 2 (a) Equivalent schematic of DL with external feedback. (b) Schematic of WDM with grating.
Fig. 3
Fig. 3 The original emission spectrum of the diode stack at pump current 60.00A. (a) without FAC and SAC. (b) with FAC and SAC.
Fig. 4
Fig. 4 after spectral beam combining model at pump current 60.00A. (a) Spectrum characteristics of mini-bar stack. (b) Spectrum characteristics of conventional10mm bars.
Fig. 5
Fig. 5 P-I and electro-optical conversion efficiency curves of output power.

Equations (3)

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m λ i =d(sin θ i +sin θ d )
θ i = θ littrow + tan 1 ( ip f ), i=(4,3,,4)
λ i =d{sin( θ littrow + ip f )+sin( θ littrow )}

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