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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 9 — May. 1, 2014
  • pp: 2537–2540

Beam wavefront dynamical compensation by aberrations of the gain medium in laser amplifiers for beam quality improvement

Chong Liu, Yi Wang, Zhibin Ye, Zhigang Zhao, and Zhen Xiang  »View Author Affiliations


Optics Letters, Vol. 39, Issue 9, pp. 2537-2540 (2014)
http://dx.doi.org/10.1364/OL.39.002537


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Abstract

A method is presented to dynamically improve the beam quality in laser amplifiers by spherical aberration compensation. By imaging the field with a negative spherical aberration into a laser amplifier, the wavefront aberration of an input beam could be compensated by that of the gain medium in the amplifier with positive spherical aberration. Both power amplification and beam quality improvement can be achieved simultaneously. No additional optical components are introduced. Experiments are conducted for a beam from an oscillator with 28 W output power. The M2 factor of the beam was improved from 4.2 to 1.6 after amplification. The power was also amplified to 54.7 W. It is a cost-effective and passive way for wavefront compensation, as compared to deformable mirrors and phase corrector plates.

© 2014 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.6810) Lasers and laser optics : Thermal effects

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 21, 2014
Revised Manuscript: March 11, 2014
Manuscript Accepted: March 15, 2014
Published: April 17, 2014

Citation
Chong Liu, Yi Wang, Zhibin Ye, Zhigang Zhao, and Zhen Xiang, "Beam wavefront dynamical compensation by aberrations of the gain medium in laser amplifiers for beam quality improvement," Opt. Lett. 39, 2537-2540 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-9-2537


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