Title :
Two-Photon Pumping of a Four-Level System in Ammonia to Obtain 12.16 mu m Radiation for Isotope Separation
Author :
Leap, J.w. ; Kim, K.J. ; Malk, E.G. ; Coleman, P.D.
Abstract :
Radiation at 12.16 mu m (822.65 cm/sup -1/) has been obtained from /sup 14/NH/sub 3/ using the 2upsilon/sub 2/a(53) to upsilon/sub 2/s(63) transition with the upper level pumped from Ga(33) via upsilon/sub 2/s(43) by two CO/sub 2/ TEA lasers. In an unoptimized cavity, efficiency was 1%: 0.5 mJ of 12.16 mJ out with 50 mJ of input (25% P/sub 9/(8) /sup 13/CO/sub 2/ and 75% P/sub 9/(24) /sup 12/CO/sub 2/). This particular wavelength is relevant to LIS of uranium.
Keywords :
Frequency; Isotopes; Laboratories; Laser excitation; Laser transitions; Optical pumping; Pump lasers; Quantum cascade lasers; Resonance; Spectroscopy;
Conference_Titel :
Microwave Symposium Digest, 1978 IEEE-MTT-S International
Conference_Location :
Ottawa, ON, Canada
DOI :
10.1109/MWSYM.1978.1123913
