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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 18 — Sep. 4, 2006
  • pp: 8178–8183

Correction of beam errors in high power laser diode bars and stacks

J. F. Monjardin, K. M. Nowak, H. J. Baker, and D. R. Hall  »View Author Affiliations


Optics Express, Vol. 14, Issue 18, pp. 8178-8183 (2006)
http://dx.doi.org/10.1364/OE.14.008178


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Abstract

The beam errors of an 11 bar laser diode stack fitted with fast-axis collimator lenses have been corrected by a single refractive plate, produced by laser cutting and polishing. The so-called smile effect is virtually eliminated and collimator aberration greatly reduced, improving the fast-axis beam quality of each bar by a factor of up to 5. The single corrector plate for the whole stack ensures that the radiation from all the laser emitters is parallel to a common axis. Beam-pointing errors of the bars have been reduced to below 0.7 mrad.

© 2006 Optical Society of America

OCIS Codes
(140.2010) Lasers and laser optics : Diode laser arrays
(140.2020) Lasers and laser optics : Diode lasers
(140.3300) Lasers and laser optics : Laser beam shaping

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 1, 2006
Manuscript Accepted: August 22, 2006
Published: September 1, 2006

Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-18-8178


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References

  1. U. Brauch, P. Loosen, and H. Opower, "High-power diode lasers for direct applications," in High Power Diode Lasers, R. Diehl, ed., (Springer-Verlag Berlin Heidelberg, 2000), pp. 303-368. [CrossRef]
  2. I. Ghozeil, "Hartmann and other screen tests," in Optical Shop Testing, D. Malacara, ed., (Wiley, 1992), pp. 367-396.
  3. K. M. Nowak, H. J. Baker, and D. R. Hall, "Pulsed-laser machining and polishing of silica micro-optical components using a laser and an acousto-optic modulator," in Laser Micromachining for Optoelectronic Device Fabrication, A. Ostendorf, ed., Proc. SPIE, 4941, 107-112 (2002). [CrossRef]
  4. 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, 5660-5667 (2002). [CrossRef] [PubMed]
  5. K. M. Nowak, H. J. Baker, and D. R. Hall, "Efficient laser polishing of silica micro-optic components," Appl. Opt. 45, 162-171 (2006). [CrossRef] [PubMed]
  6. T. Jitsuno, K. Tokumura, N. Nakashima, and M. Nakatsuka, "Laser ablative shaping of plastic optical components for phase control," Appl. Opt. 38, 3338-3342 (1999). [CrossRef]
  7. A. R. Holdsworth, H. J. Baker, "Assessment of micro-lenses for diode bar collimation," in Laser Diode and LED Applications III, K. J. Linden, ed., Proc. SPIE 3000, 209-214 (1997).
  8. N. U. Wetter, "Three-fold effective brightness increase of laser diode bar emission by assessment and correction of diode array curvature," Opt. Laser Technol. 33, 181-187 (2001). [CrossRef]

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