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Optics Letters

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  • Vol. 30, Iss. 12 — Jun. 15, 2005
  • pp: 1485–1487

Efficient improvement of laser beam quality by coherent combining in an improved Michelson cavity

Qinjun Peng, Zhipei Sun, Yahui Chen, Lin Guo, Yong Bo, Xiaodong Yang, and Zuyan Xu  »View Author Affiliations


Optics Letters, Vol. 30, Issue 12, pp. 1485-1487 (2005)
http://dx.doi.org/10.1364/OL.30.001485


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Abstract

The efficient improvement of laser beam quality is demonstrated by coherent combining of two Nd:YVO4 lasers in an improved Michelson cavity. When the two lasers are separately operated with beam qualities of M²_x = 1.74 and M²_y = 1.34 for laser 1 and M²_x = 1.53 and M²_y = 1.39 for laser 2, by coherent combining of the two lasers, a single beam output exceeding 2 W with a nearly perfect TEM_00 mode (M²_x = 1.08, M²_y = 1.04) is obtained. Moreover, it can withstand environmental perturbations with no change in beam quality or output power and has the potential for scaling to much higher output power with high beam quality by coherent addition of multiple lasers in this configuration.

© 2005 Optical Society of America

OCIS Codes
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.1540) Lasers and laser optics : Chaos

Citation
Qinjun Peng, Zhipei Sun, Yahui Chen, Lin Guo, Yong Bo, Xiaodong Yang, and Zuyan Xu, "Efficient improvement of laser beam quality by coherent combining in an improved Michelson cavity," Opt. Lett. 30, 1485-1487 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-12-1485


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