A Two-Photon Optically Pumped Molecular Gas Visible Laser

C. R. Quick Jr.; J. H. Glownia; J. J. Tiee; F. L. Archuleta

doi:10.1117/12.934757

7 November 1983 A Two-Photon Optically Pumped Molecular Gas Visible Laser

C. R. Quick Jr., J. H. Glownia, J. J. Tiee, F. L. Archuleta

Proceedings Volume 0380, Los Alamos Conf on Optics '83; (1983) https://doi.org/10.1117/12.934757
Event: Los Alamos Conference on Optics, 1983, New Mexico, United States

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.

Citation Download Citation

C. R. Quick Jr., J. H. Glownia, J. J. Tiee, and F. L. Archuleta "A Two-Photon Optically Pumped Molecular Gas Visible Laser", Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983); https://doi.org/10.1117/12.934757

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