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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 19 — Sep. 17, 2007
  • pp: 11776–11780

Beam quality improvement of laser diode array by using off-axis external cavity

Su Zhouping, Lou Qihong, Dong Jingxing, Zhou Jun, and Wei Runrong  »View Author Affiliations


Optics Express, Vol. 15, Issue 19, pp. 11776-11780 (2007)
http://dx.doi.org/10.1364/OE.15.011776


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Abstract

A novel off-axis external cavity is designed for laser diode array to improve the beam quality. In this external cavity, a circle aperture with variable size is used as a spatial filter. The diameter of aperture is optimized to 1.2mm and the off-axis angle of external cavity is optimized at 2.6 deg. In the optimal case, the beam parameter product (BPP) of laser diode array is reduced to 121 mm.mrad from 1050 mm.mrad with external cavity optical efficiency of 81%.

© 2007 Optical Society of America

OCIS Codes
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3460) Lasers and laser optics : Lasers
(140.3520) Lasers and laser optics : Lasers, injection-locked

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 22, 2007
Revised Manuscript: July 28, 2007
Manuscript Accepted: August 13, 2007
Published: August 31, 2007

Citation
Su Zhouping, Lou Qihong, Dong Jingxing, Zhou Jun, and Wei Runrong, "Beam quality improvement of laser diode array by using off-axis external cavity," Opt. Express 15, 11776-11780 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-19-11776


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References

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