Abstract
The performance of a 100 kW Rb–He diode pumped alkali laser system is predicted, including power scaling, optical efficiency, and beam quality. A transverse flow geometry with longitudinal diode pumping produces a nonlinear temperature profile in the flow direction, with temperature increasing by 124 K for a 0.5 m/s flow rate and a pump intensity. The optical-to-optical efficiency is 70%, and the tilt-corrected Strehl is 0.545 for this slow flow, 45 ms residence time design. By increasing the flow speed to 15 m/s (1.5 ms residence time), the efficiency is improved to 82%, and the laminar flow beam quality is near the diffraction limit, . Beam quality is adversely affected at higher helium pressure for the slow flow conditions.
Full Article | PDF ArticleMore Like This
Karol Waichman, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 31(11) 2628-2637 (2014)
Eyal Yacoby, Karol Waichman, Oren Sadot, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 32(9) 1824-1833 (2015)
Karol Waichman, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 35(3) 558-567 (2018)