OSA's Digital Library

Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 2 — Jan. 10, 2009
  • pp: 365–370

Linewidth reduction of a broad-area laser diode array in a compound external cavity

Bo Liu, Yun Liu, and Yehuda Braiman  »View Author Affiliations

Applied Optics, Vol. 48, Issue 2, pp. 365-370 (2009)

View Full Text Article

Enhanced HTML    Acrobat PDF (592 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A compound external cavity is designed and implemented to achieve a homogeneous spectrum distribution of broad area laser diodes in an array and to narrow the spectral linewidth of the entire array. The compound external cavity is composed of an optical coupler and a Littrow external cavity with a telescope along the fast axis. The inhomogeneous distribution of individual laser diodes spectrum generated by the “smile” effect was reduced by the telescope. The effective transverse coupling among individual laser diodes in an array was enhanced by the optical coupler, which further reduced the spectrum inhomogeneous distribution of the entire array. The spectral linewidth of a 49-emitter laser array is reduced to 0.1 nm at the output power of 12.5 W .

© 2009 Optical Society of America

OCIS Codes
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3410) Lasers and laser optics : Laser resonators

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 10, 2008
Revised Manuscript: October 14, 2008
Manuscript Accepted: November 13, 2008
Published: January 8, 2009

Bo Liu, Yun Liu, and Yehuda Braiman, "Linewidth reduction of a broad-area laser diode array in a compound external cavity," Appl. Opt. 48, 365-370 (2009)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. T. G. Walker and W. Happer, “Spin-exchange optical pumping of noble-gas nuclei,” Rev. Mod. Phys. 69, 629-642 (1997). [CrossRef]
  2. M. V. Romalis, E. Miron, and G. D. Cates, “Pressure broadening of Rb D1 and D2 lines by He3, He4, N2, and Xe: line cores and near wings,” Phys. Rev. A 56, 4569-4578 (1997). [CrossRef]
  3. B. Zhdanov, C. Maes, T. Ehrenreich, A. Havko, N. Koval, T. Meeker, B. Worker, B. Flusche, and R. J. Knize, “Optically pumped potassium laser,” Opt. Commun. 270, 353-355 (2007). [CrossRef]
  4. B. Zhdanov and R. J. Knize, “Diode-pumped 10 W continuous wave cesium laser,” Opt. Lett. 32, 2167-2169 (2007). [CrossRef] [PubMed]
  5. B. Chann, I. Nelson, and T. G. Walker, “Frequency-narrowed external-cavity diode-laser-array bar,” Opt. Lett. 25, 1352-1354 (2000). [CrossRef]
  6. E. Babcock, B. Chann, I. A. Nelson, and T. G. Walker, “Frequency-narrowed diode array bar,” Appl. Opt. 44, 3098-3104 (2005). [CrossRef] [PubMed]
  7. C. L. Talbot, M. E. J. Frese, D. Eang, I. Brereton, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Linewidth reduction in a large-smile laser diode array,” Appl. Opt. 44, 6264-6268 (2005). [CrossRef] [PubMed]
  8. L. S. Meng, B. Nizamov, P. Madasamy, J. K. Brasseur, T. Henshaw, and D. K. Neuman, “High power 7-GHz bandwidth laser array and its use in optically pump singlet delta oxygen,” Opt. Express 14, 10469-10474 (2006). [CrossRef] [PubMed]
  9. G. J. Steckman, W. Liu, R. Platz, D. Schroeder, C. Moser, and F. Havermeyer, “Volume holographic grating wavelength stabilized laser diodes,” IEEE J. Sel. Top. Quantum Electron. 13, 672-678 (2007). [CrossRef]
  10. A. Gourevitch, G. Venus, V. Smirnov, D. A. Hostutler, and L. Glebov, “Continous wave, 30 W laser-diode bar with 10 GHz linewidth for Rb laser pumping,” Opt. Lett. 33, 702-704 (2008). [CrossRef] [PubMed]
  11. B. V. Zhdanov, T. Ehrenreich, and R. J. Knize, “Narrowband external cavity laser diode array,” Electron. Lett. 43, 221-222 (2007). [CrossRef]
  12. 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, 9405-9410 (2008). [CrossRef] [PubMed]
  13. J. F. Monjardin, K. M. Nowak, H. J. Baker, and D. R. Hall, “Correction of beam errors in high power laser diode bars and stacks,” Opt. Express 14, 8178-8183 (2006). [CrossRef] [PubMed]
  14. G. L. Bourdet, I. Hassiaoui, R. McBride, J. F. Monjardin, H. Baker, N. Michel, and M. Krakowski, “High-power, low-divergence, linear array of quasi-diffraction-limited beams supplied by tapered diodes,” Appl. Opt. 46, 6297-6301(2007). [CrossRef] [PubMed]
  15. J. R. Leger, M. L. Scott, and W. B. Veldkamp, “Coherent addition of AlGaAs lasers using microlenses and diffractive coupling,” Appl. Phys. Lett. 52, 1771-1773 (1988). [CrossRef]
  16. J. R. Leger, “Lateral mode control of an AlGaAs laser array in a Talbot cavity,” Appl. Phys. Lett. 55, 334-336(1989). [CrossRef]
  17. 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]
  18. Y. Liu and Y. Braiman, “Synchronization of high-power broad-area semiconductor lasers,” IEEE J. Sel. Top. Quantum Electron. 10, 1013-1024 (2004). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited