Abstract
We report that the nonspontaneous radiative (amplified spontaneous emission or superradiation) relaxation of barium 6s6p 1P1 to 6s5d 1D2 from the laser-excited upper state was enhanced by laser light that was set resonant with the 6s5d 1D2–5d6p 1F3 transition to deplete the lower-state population. To our knowledge, this was the first use of fluorescence-dip observation to investigate this laser-enhanced emission process.
© 1992 Optical Society of America
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