Dependence of Cs atoms density and laser power on gas velocity in Cs DPAL

•The Cs density strongly depends on the flow velocity.•The decrease of the Cs density in the laser section at low gas velocity is the main reason for the laser power decrease.•The gas heating has only small effect on the laser power. The laser power dependence on gas velocity in flowing-gas diode pu...

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Bibliographic Details
Published in:Optics and laser technology 2019-08, Vol.116, p.18-21
Main Authors: Yacoby, Eyal, Auslender, Ilya, Waichman, Karol, Barmashenko, Boris D., Rosenwaks, Salman
Format: Article
Language:English
Subjects:
Cesium
Density
Dependence
DPAL
Dynamic models
Gas flow
Gas heating
Laser beam heating
Laser power
Lasers
Quenching
Temperature control
Thermal management
Velocity
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Summary:•The Cs density strongly depends on the flow velocity.•The decrease of the Cs density in the laser section at low gas velocity is the main reason for the laser power decrease.•The gas heating has only small effect on the laser power. The laser power dependence on gas velocity in flowing-gas diode pumped alkali lasers (DPALs) has been theoretically and experimentally studied, but the reasons for this dependence are not yet completely understood. Previously we reported on a flowing-gas Cs DPAL with separate temperature control of the laser cell and the alkali source, enabling continuous stable operation for more than one hour [Yacoby et al, Opt. Express 26, 17814 (2018)]. The dependence of the power on velocities of 1–4 m/s was monitored and it was found that for this range of velocities the power remains constant. In the present study the power at small flow velocities (
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2019.03.008