Abstract

A general model that reproduces the output parameters of diode-pumped alkali lasers with different pump beam apertures and shapes is reported. Comprehensive experimental and theoretical parametric studies of static diode-pumped Cs lasers are presented, including the dependence of the output laser power and the beam quality factor $M^2$ on the power of the pump beam for different shapes of the pump beam, pump-to-laser beam overlaps, and laser cell lengths. Two different pump lasers with circular and rectangular beam shapes and pump powers of 65 W and 7 W, respectively, were used in two sets of experiments. An optical model of multi-transverse mode operation of alkali vapor lasers [Opt. Express 25, 19767 (2017) [CrossRef]  ] was modified and applied to the experimental results. The values of the laser power and $M^2$ predicted by the model are in good agreement with the measured values for a wide range of the laser parameters.

© 2018 Optical Society of America

Laser power, cell temperature, and beam quality dependence on cell length of static Cs DPAL

Karol Waichman, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 34(2) 279-286 (2017)

Beam propagation in an inhomogeneous medium of a static gas cesium diode pumped alkali laser: three-dimensional wave optics and fluid dynamics simulation

Karol Waichman, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 35(3) 558-567 (2018)

Improving the beam quality of DPALs by refractive index gradients induced by the pump beam in the heated gain medium: experimental verification of the theoretical prediction

Roei Luzon, Svyatoslav Kostyukovets, Ilya Auslender, Nitzan Mayorkas, Eyal Yacoby, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 38(2) 550-552 (2021)

Computational fluid dynamics modeling of subsonic flowing-gas diode-pumped alkali lasers: comparison with semi-analytical model calculations and with experimental results

Karol Waichman, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 31(11) 2628-2637 (2014)

Analysis of continuous wave diode pumped cesium laser with gas circulation: experimental and theoretical studies

Eyal Yacoby, Ilya Auslender, Karol Waichman, Oren Sadot, Boris D. Barmashenko, and Salman Rosenwaks
Opt. Express 26(14) 17814-17819 (2018)