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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 26 — Dec. 21, 2009
  • pp: 23576–23581

Dual-axis beam correction for an array of single-mode diode laser emitters using a laser-written custom phase-plate

Natalia Trela, Howard J. Baker, Jozef. J. Wendland, and Denis R. Hall  »View Author Affiliations

Optics Express, Vol. 17, Issue 26, pp. 23576-23581 (2009)

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A single optical component for a diode laser bar combines fast-axis smile and lens error correction with slow-axis collimation. Produced by laser-machining/polishing, it provides 0.9mm focal length, 200μm pitch slow-axis collimation on the same surface that corrects fast-axis errors. Custom fabrication enables fill-factor optimization for the 49 single-mode beams and gives parallel collimation with rms pointing errors of 3% and 6% of the far-field divergence for the fast- and slow-axis array respectively. Sub-micron pitch mismatch between the slow-axis lens and emitter arrays, and beam pointing changes by thermal expansion of the laser bar are detected.

© 2009 OSA

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3300) Lasers and laser optics : Laser beam shaping

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 13, 2009
Revised Manuscript: November 23, 2009
Manuscript Accepted: November 29, 2009
Published: December 9, 2009

Natalia Trela, Howard J. Baker, Jozef. J. Wendland, and Denis R. Hall, "Dual-axis beam correction for an array of single-mode diode laser emitters using a laser-written custom phase-plate," Opt. Express 17, 23576-23581 (2009)

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  1. 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(18), 8178–8183 (2006). [CrossRef] [PubMed]
  2. 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]
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  5. H. J. Baker, J. F. Monjardin, P. Kneip, D. R. Hall, and R. McBride, “1.8 kW diode laser system for fibre-delivery using brightness-enhanced diode stacks and a novel final beam-shaper,” Proc. SPIE 6876, 68760W (2008). [CrossRef]
  6. I. Hassiaoui, N. Michel, G. Bourdet, R. Mc Bride, M. Lecomte, O. Parillaud, M. Calligaro, M. Krakowski, and J.-P. Huignard, “Very compact external cavity diffraction-coupled tapered laser diodes,” Appl. Opt. 47(6), 746–750 (2008). [CrossRef] [PubMed]
  7. 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]
  8. V. Raab and R. Menzel, “Phase-locked array of 25 broad-area lasers,” Proc. SPIE 4629, 24 (2002). [CrossRef]
  9. B. Chann, A. K. Goyal, T. Y. Fan, A. Sanchez-Rubio, B. L. Volodin, and V. S. Ban, “Efficient, high-brightness wavelength-beam-combined commercial off-the-shelf diode stacks achieved by use of a wavelength-chirped volume Bragg grating,” Opt. Lett. 31(9), 1253–1255 (2006). [CrossRef] [PubMed]
  10. B. Köhler, T. Brand, M. Haag, and J. Biesenbach, “Wavelength stabilized high-power diode laser modules,” in “High-Power Diode Laser Technology and Applications VII,” M.S. Zediker ed. Proc. SPIE 7198, 10 (2009).
  11. G. A. J. Markillie, H. J. Baker, F. J. Villarreal, and D. R. Hall, “Effect of vaporization and melt ejection on laser machining of silica glass micro-optical components,” Appl. Opt. 41(27), 5660–5667 (2002). [CrossRef] [PubMed]
  12. K. M. Nowak, H. J. Baker, and D. R. Hall, “Efficient laser polishing of silica micro-optic components,” Appl. Opt. 45(1), 162–171 (2006). [CrossRef] [PubMed]
  13. N. Lichtenstein, Y. Manz, and P. Mauron, A. FiIy, S. Arlt, A. Thies, B. Schmidt, J. Muller, S. Pawlik, B. Sverdlov, and H. Harder, “Single mode emitter array laser bars for high-brightness applications,” IEEE 19th International Semiconductor Laser Conf., Matsue-shi, Japan, 2004, Conference Digest pp. 45–46.

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