Answers are grounded in this paper and cite their sources.
Lasing is observed near 630 nm in a sulforhodamine 640-doped silica gel pumped by frequency-doubled radiation from a Q-switched Nd:YAG laser. A conversion efficiency of 20% is obtained. The laser wavelength is tunable over 40 nm.
No takes yet. Share an insight, caveat, or question.
Salin et al. (1989) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: