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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 1120–1122

Toric concave mirror laser resonator with a big Fresnel number

Qin Yingxiong, Tang Xiahui, Xiao Yu, Liu Juan, Wang Du, Peng Hao, Deng Qiansong, Zhu Xiao, and Li Zhengjia  »View Author Affiliations


Optics Letters, Vol. 34, Issue 7, pp. 1120-1122 (2009)
http://dx.doi.org/10.1364/OL.34.001120


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Abstract

A new type of toric concave mirror laser resonator with a big Fresnel number is presented. The M 2 factor of an output laser beam of the new resonator with a Fresnel number of 8.05 is close to that of the plane-concave stable resonator with a Fresnel number of 2.01, the volume of output mode of the new resonator is about four times of that of the plane-concave stable resonator. A 3.2 kW doughnutlike laser beam with an M 2 factor of 1.9 is obtained experimentally by using the new resonator on a high-power transverse flow C O 2 laser, while the similar laser power with an M 2 factor of 7.5 is obtained by using a plane-concave stable resonator with the same Fresnel number. Results show that a toric concave mirror laser resonator can permit operation of the laser with high power and high beam quality mode in the laser with large gain volume.

© 2009 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 7, 2009
Revised Manuscript: February 16, 2009
Manuscript Accepted: February 23, 2009
Published: March 31, 2009

Citation
Qin Yingxiong, Tang Xiahui, Xiao Yu, Liu Juan, Wang Du, Peng Hao, Deng Qiansong, Zhu Xiao, and Li Zhengjia, "Toric concave mirror laser resonator with a big Fresnel number," Opt. Lett. 34, 1120-1122 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-7-1120


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