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Proceedings Paper

Novel method to improve the performance of Nd:YAG high-power low-divergence lasers using a passive compensation of the spherical aberration inside the resonator
Author(s): A. Montmerle Bonnefois; M. Gilbert; P.-Y. Thro; J.-M. Weulersse
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Paper Abstract

It is very difficult to achieve both high-power and low divergence lasing at once in cw or high-repetition rate lasers because thermal effects limit their efficiency. But as these effects are stable over time, a passive correction is conceivable. In this paper we propose a very simple but effective method to compensate the thermal effects in such lasers, using an aspherical phase-plate inside the resonator. The first results are very promising, as we demonstrated a very stable 418 W, M2=5.7 laser for only 2280 W of total optical pumping power (i.e 2050 W of absorbed pump power).

Paper Details

Date Published: 27 April 2005
PDF: 8 pages
Proc. SPIE 5707, Solid State Lasers XIV: Technology and Devices, (27 April 2005); doi: 10.1117/12.592145
Show Author Affiliations
A. Montmerle Bonnefois, CEA Saclay (France)
M. Gilbert, CEA Saclay (France)
P.-Y. Thro, CEA Saclay (France)
J.-M. Weulersse, CEA Saclay (France)

Published in SPIE Proceedings Vol. 5707:
Solid State Lasers XIV: Technology and Devices
Hanna J. Hoffman; Ramesh K. Shori, Editor(s)

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