@inproceedings{7d6427e8480c4cab819377c31d5f62c6,
title = "CFD assisted simulation of temperature distribution and laser power in pulsed and CW pumped static gas DPALs",
abstract = "An analysis of radiation, kinetic and fluid dynamic processes in diode pumped alkali lasers (DPALs) is reported. The analysis is based on a three-dimensional, time-dependent computational fluid dynamics (3D CFD) model. The CFD code which solves the gas conservation equations includes effects of natural convection and temperature diffusion of the species in the DPAL mixture. The gas flow conservation equations are coupled to the equations for DPAL kinetics and to the Beer-Lambert equations for pump and laser beams propagation. The DPAL kinetic processes in the Cs/CH4 (K/He) gas mixtures considered involve the three low energy levels, (1) n2S1/2, (2) n2P3/2 and (3) n2P1/2 (where n=4,6 for K and Cs, respectively), three excited alkali states and two alkali ionic states. Using the CFD model, the gas flow pattern and spatial distributions of the pump and laser intensities in the resonator were calculated for end-pumped CW and pulsed Cs and K DPALs. The DPAL power and medium temperature were calculated as a function of pump power and pump pulse duration. The CFD model results were compared to experimental results of Cs and K DPALs.",
keywords = "Atomic gas lasers, Buoyancy, Diode pumped lasers, Laser theory, Thermal effects",
author = "Karol Waichman and Barmashenko, {Boris D.} and Salman Rosenwaks",
note = "Publisher Copyright: {\textcopyright} 2015 COPYRIGHT SPIE.; Technologies for Optical Countermeasures XII; and High-Power Lasers 2015: Technology and Systems ; Conference date: 21-09-2015 Through 24-09-2015",
year = "2015",
month = jan,
day = "1",
doi = "10.1117/12.2193879",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Bohn, {Willy L.} and Titterton, {David H.} and Richardson, {Mark A.} and Grasso, {Robert J.} and Harro Ackermann",
booktitle = "Technologies for Optical Countermeasures XII; and High-Power Lasers 2015",
address = "United States",
}