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Proceedings Paper

A Two-Photon Optically Pumped Molecular Gas Visible Laser
Author(s): C. R. Quick; J. H. Glownia; J. J. Tiee; F. L. Archuleta
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Paper Abstract

Recent investigations of the multiphoton ionization (MPI) spectrum of gaseous ammonia have led to the discovery of a novel two-photon pumped molecular gas electronic transition laser. Resonant, two-photon electronic excitation of NH3 in the near uv (~305 nm) leads to the first observation of fluorescence from NH3 excited states (B and C'), and, at higher pressures, to lasing action (~570 nm) between numerous C' and A state vibronic levels. A frequency-doubled Nd:YAG pumped dye laser (a few mJ) is focused into a cell containing NH3 (or ND3). Stimulated emission is observed in the forward and backward direction at NH3 pressures greater than -200 torr, without external mirrors to provide feedback. Conversion efficiencies (output NH3 pulse energy/input pulse energy) as high as 2% have been observed.

Paper Details

Date Published: 7 November 1983
PDF: 4 pages
Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983); doi: 10.1117/12.934757
Show Author Affiliations
C. R. Quick, The University of California (United States)
J. H. Glownia, The University of California (United States)
J. J. Tiee, The University of California (United States)
F. L. Archuleta, The University of California (United States)


Published in SPIE Proceedings Vol. 0380:
Los Alamos Conf on Optics '83
Robert S. McDowell; Susanne C. Stotlar, Editor(s)

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