VUV stimulated anti-Stokes Raman emission in inverted atomic selenium

Stimulated anti-Stokes Raman scattering at 145.7 nm in inverted Se is generated by photolysis of OCSe at 193 nm and the subsequent up-conversion of 205.1-nm pump radiation. The tuning profile is characterized with OCSe pressure, the energies and relative timing of the pump and photodissociation lasers, and CO and Ar buffer-gas pressure. The use of CO as a buffer gas is discovered to be detrimental to the anti-Stokes output. Sixteen competing stimulated emission channels are found to suppress anti-Stokes emission on exact 4p/sup 4/ /sup 1/S/sub 0/-4p/sup 3/ 5s/sup 3/ P/sup 0//sub 1/ pump resonance.<
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