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Intracavity upconversion is demonstrated in a synchronously pumped Styryl 9M dye laser. Picosecond blue pulses at 463 nm are generated by type II nearly noncritical phase-matched intracavity sum-frequency mixing in KTiOPO(4) of the dye-laser pulses at 824 nm and injected pulses from a mode-locked cw Nd:YAG laser at 1064 nm.
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Benicewicz et al. (1990) studied this question.
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