2 February 2016 Low-pressure cesium and potassium diode pumped alkali lasers: pros and cons
Author Affiliations +
Optical Engineering, 55(2), 026105 (2016). doi:10.1117/1.OE.55.2.026105
This paper presents the results of our experiments on a comparative study of cesium and potassium diode pumped alkali lasers (DPALs) aimed to determine which of these two lasers has more potential to scale to high powers. For both lasers, we have chosen a “low-pressure DPAL approach,” which uses buffer gas pressure of about 1 atm for spin-orbit mixing of the excited states of alkali atoms to provide population inversion in the gain medium. The goal of this study was to determine power-limiting effects, which affect the performance of these DPALs, and find out how these limiting effects can be mitigated. We studied the performance of both lasers in CW and pulsed modes using both static and flowing gain medium and pump with different pulse duration. We observed output power degradation in time from the initial value to the level corresponding to the CW mode of operation. As a result of this study, some essential positive and negative features of both DPALs were revealed, which should be taken into account for power-scaling experiments.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Boris V. Zhdanov, Matthew D. Rotondaro, Michael K. Shaffer, Randall J. Knize, "Low-pressure cesium and potassium diode pumped alkali lasers: pros and cons," Optical Engineering 55(2), 026105 (2 February 2016). https://doi.org/10.1117/1.OE.55.2.026105



Semiconductor lasers

Continuous wave operation


Pulsed laser operation

Laser resonators


DPAL: historical perspective and summary of achievements
Proceedings of SPIE (October 15 2013)
Wavelength diversity in optically pumped alkali vapor lasers
Proceedings of SPIE (January 13 2017)
High power volume Bragg laser bar with 10 GHz spectral...
Proceedings of SPIE (April 14 2008)
Progress in alkali lasers development
Proceedings of SPIE (February 21 2008)
Diode pumped alkali lasers
Proceedings of SPIE (October 05 2011)

Back to Top