Abstract
A simple, semi-analytical model of flowing gas diode pumped alkali lasers (DPALs) is presented. The model takes into account the rise of temperature in the lasing medium with increasing pump power, resulting in decreasing pump absorption and slope efficiency. The model predicts the dependence of power on the flow velocity in flowing gas DPALs and checks the effect of using a buffer gas with high molar heat capacity and large relaxation rate constant between the and fine-structure levels of the alkali atom. It is found that the power strongly increases with flow velocity and that by replacing, e.g., ethane by propane as a buffer gas the power may be further increased by up to 30%. Eight kilowatt is achievable for 20 kW pump at flow velocity of .
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Boris D. Barmashenko and Salman Rosenwaks
J. Opt. Soc. Am. B 30(5) 1118-1126 (2013)
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)