OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 44, Iss. 17 — Jun. 10, 2005
  • pp: 3540–3544

Micrograting-array beam-shaping technique for asymmetrical laser beams

Guoxing Zheng, Chunlei Du, Chongxi Zhou, and Chunyan Zheng  »View Author Affiliations

Applied Optics, Vol. 44, Issue 17, pp. 3540-3544 (2005)

View Full Text Article

Enhanced HTML    Acrobat PDF (584 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A beam-shaping technique is presented for asymmetrical laser beams with different beam waists and divergences in both vertical and horizontal directions. We utilize a pair of two-dimensional micrograting arrays to equalize the beam parameter products of an asymmetrical beam in orthogonal directions by deflecting the appointed parts of the beam on the longer side of the beam and by recombining the parts on the shorter side. When combined with divergent transformation by means of collimating optical components, the beam-shaping system can produce a symmetrical beam in orthogonal directions with optimized beam waists and divergences. A beam-equalization system is designed and demonstrated for a typical asymmetrical beam of a laser diode bar. In the experiment an emission beam with dimensions of 1 µm × 10 mm and half-divergences of 148 mrad × 576 mrad in the far field is transformed into an almost-square distribution with dimensions of ∼12 mm × 12 mm and half-divergences of ∼2 mrad × 2 mrad, which confirm the effectiveness of the proposed technique.

© 2005 Optical Society of America

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

Original Manuscript: September 29, 2004
Revised Manuscript: December 20, 2004
Manuscript Accepted: January 4, 2005
Published: June 10, 2005

Guoxing Zheng, Chunlei Du, Chongxi Zhou, and Chunyan Zheng, "Micrograting-array beam-shaping technique for asymmetrical laser beams," Appl. Opt. 44, 3540-3544 (2005)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. See http://www.cymer.com for more information, or contact Cymer, Inc., 16750 Via Del Compo Court, San Diego, Calif. 92127-1712.
  2. H.-G. Treusch, A. Ovtchinnikov, X. He, M. Kanskar, J. Mott, S. Yang, “High-brightness semiconductor laser sources for materials processing: stacking, beam shaping, and bars,” IEEE J. Sel. Top. Quantum Electron. 6, 601–614 (2000). [CrossRef]
  3. P. Loosen, “Advanced concepts of using diode lasers in material processing,” in Lasers in Material Processing, L. H. J. F. Backmann, ed., Proc. SPIE3097, 480–485 (1997).
  4. W. A. Clarkson, D. C. Hanna, “Two-mirror beam-shaping technique for high-power diode bars,” Opt. Lett. 21, 375–377 (1996). [CrossRef] [PubMed]
  5. K. Du, M. Baumann, B. Ehlers, H. G. Treusch, P. Loosen, “Fiber-coupling technique with micro step-mirrors for high-power diode-laser bars,” in Advanced Solid-State Lasers, C. R. Pollack, W. R. Bosenberg, eds., Vol. 10 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1977), pp. 390–393.
  6. P. Y. Wang, “Beam-shaping optics deliver high-power beam,” Laser Focus World 37, 115–118 (2001).
  7. Y. Satoshi, D. Masahiro, C. Koichi, K. Tetsurou, S. Yoshimasa, “Optical path rotating device used with linear array laser diode and laser apparatus applied therewith,” U.S. patent5513201 (2July1996).
  8. D. L. Shealy, “Geometrical methods,” in Laser Beam Shaping: Theory and Techniques, M. D. Fred, C. H. Scott, eds. (Marcel-Dekker, New York, 2000), pp. 163–213.
  9. Commercial lens design software, ZEMAX Development Corp., 4901 Morena Boulevard, Suite 207, San Diego, Calif. 92117-7320.

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.


Fig. 1 Fig. 2 Fig. 3
Fig. 4

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited