Demonstration of the first visible wavelength direct nuclear pumped laser

Details Demonstration of the first visible wavelength direct nuclear pumped laser Demonstration of the first visible wavelength direct nuclear pumped laser

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976phdt........61a&link_type=abstract

Ph.D. Thesis Illinois Univ., Urbana-Champaign.

Physics

1

Laser Outputs, Nuclear Reactors, Pulsed Lasers, Light (Visible Radiation), Mercury (Metal), Pressure

Scientific paper

Experiments concentrated on mercury partial pressures in the range 2 to 10 mTorr at a total pressure of 600 Torr. The laser output increased as the mercury partial pressure was decreased, with an apparent saturation beginning at 2.5 mTorr. A single data point at 300 Torr total pressure and 2.5 mTorr showed a decrease in the laser output. To investigate possible lasing at higher mercury pressures, the total pressure was adjusted to 350 Torr with 2.8 Torr mercury partial pressure, but no lasing was observed at 6150 A. In addition to the laser experiments, gain measurements are described that use a chopped resonant cavity spectroscopy technique at a neutron flux too low to produce lasing. The gain measurements, successfully predicted the operating regime of the DNPL achieved while using the Sandia SPR II reactor.

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