Abstract
Transitions from HgBr to higher electronic excited states have been observed in the 270–500-nm wavelength range. The experimental technique involved creation of HgBr(B) through dissociation of HgBr2 at 193 nm with an ArF laser. HgBr(B) was then pumped to a higher excited state with a dye laser. When on resonance with an upper electronic level, both suppression of the HgBr(B → X) emission (peaking at 502 nm) and emission on the Hg63P1 → 61S0 transition at 2537 A were observed. The observed electronic states have for separated atom limits Hg(3P) + Br(2P) and Hg(1P) + Br(2P). Furthermore, the transitions are strong with peak absorption cross sections of ~5 × 1017 cm2. The identity of these states and their impact on the operation of the blue-green laser are discussed.
© 1988 Optical Society of America
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