Enhancement of pump efficiency of thin disk lasers by compensation of directional image extension on pumping spot

Sasan Seyed Zamani; Esmaeil Eslami

doi:10.1117/1.OE.55.3.036104

8 March 2016 Enhancement of pump efficiency of thin disk lasers by compensation of directional image extension on pumping spot

Sasan Seyed Zamani, Esmaeil Eslami

Author Affiliations +

Optical Engineering, Vol. 55, Issue 3, 036104 (March 2016). https://doi.org/10.1117/1.OE.55.3.036104

Abstract

The effect of directional image extension on the total pumping spot in thin disk lasers is reviewed. Three modified pumping setups that can compensate this effect and improve the absorption pumping area are presented, and the efficiency, advantages, and disadvantages of each modified configuration are discussed. Numerical comparison between absorption intensity profiles confirms an increment of maximum pump absorption density at the central region of the pumping area with respect to normal setup. Experimental investigation for the last modified pumping arrangement is in good agreement with simulation results. Measuring laser power output with a similar simple I-shaped resonator shows an enhancement of slope efficiency up to 2.5% together with a lower laser threshold for our modified setup.

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Sasan Seyed Zamani and Esmaeil Eslami "Enhancement of pump efficiency of thin disk lasers by compensation of directional image extension on pumping spot," Optical Engineering 55(3), 036104 (8 March 2016). https://doi.org/10.1117/1.OE.55.3.036104

Published: 8 March 2016

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