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Proceedings Paper

Alternative wavelengths for optically pumped alkali lasers
Author(s): Glen P. Perram
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Paper Abstract

As pump intensity in Diode Pumped Alkali Lasers (DPAL) is scaled to more than 100 times threshold, several nonlinear optical processes are encountered including two photon absorption and stimulated Raman scattering. A pulsed, optically pumped potassium laser with pump intensities exceeding 1 MW/cm2 has been demonstrated with output intensities exceeding 100 kW/cm2, requiring helium buffer gas pressures above 3 atm. At low pressure Stimulated Electronic Raman Scattering (SERS) has been observed in the same system. Indeed, second and third order SERS has been observed from the DPAL upper laser level. Two-photon absorption at wavelengths near then DPAL pump transition has also been observed and used to demonstrate lasing in the blue and mid infrared. Lasing in the blue has also been achieved by direct excitation of the second excited 2P3/2 level in Cs.

Paper Details

Date Published: 7 May 2012
PDF: 10 pages
Proc. SPIE 8381, Laser Technology for Defense and Security VIII, 838109 (7 May 2012); doi: 10.1117/12.920648
Show Author Affiliations
Glen P. Perram, Air Force Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8381:
Laser Technology for Defense and Security VIII
Mark Dubinskii; Stephen G. Post, Editor(s)

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