C.H. Lee, R.F.C. Farrow, et al.
Physical Review B
Paper
Two-color, photon-gated spectral hole-burning in an organic material
Abstract
We report the first observation of two-color, photon-gated spectral hole-burning in an organic system: carbazole in boric acid glass. This novel hole-burning mechanism involves stepwise biphotonic photoionization of carbazole at 1.4 K. The quantum yield for photoionization increases exponentially with the energy of the second photon. © 1985.
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