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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1441–1444

Optimization of beam quality and optical-to-optical efficiency of Yb:YAG thin-disk regenerative amplifier by pulsed pumping

Michal Chyla, Taisuke Miura, Martin Smrz, Helena Jelinkova, Akira Endo, and Tomas Mocek  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1441-1444 (2014)
http://dx.doi.org/10.1364/OL.39.001441


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Abstract

We demonstrate an optimization method of beam quality and optical-to-optical (O-O) efficiency by using pulsed pumping. By changing the pulse duration and the peak intensity of pump pulse at the repetition rate of 1 kHz, the beam quality and O-O efficiency of the Yb:YAG thin-disk regenerative amplifier can be improved. We applied this method to the regenerative amplifier under the pumping wavelength of both 940 and 969 nm, and found that the method was effective in both pumping wavelengths. Although a Yb:YAG thin disk soldered on a copper tungsten heat sink, which has poor thermal properties compared with a thin disk mounted on a diamond substrate, was applied as a gain media, we obtained 45 mJ output with 19.3% O-O efficiency and nearly diffraction-limited beam.

© 2014 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.5560) Lasers and laser optics : Pumping
(140.3538) Lasers and laser optics : Lasers, pulsed
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 13, 2013
Manuscript Accepted: January 21, 2014
Published: March 7, 2014

Citation
Michal Chyla, Taisuke Miura, Martin Smrz, Helena Jelinkova, Akira Endo, and Tomas Mocek, "Optimization of beam quality and optical-to-optical efficiency of Yb:YAG thin-disk regenerative amplifier by pulsed pumping," Opt. Lett. 39, 1441-1444 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1441


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