Abstract
Frequency upconversion as a means of investigating the spectral characteristics of continuously tunable multiatmosphere TE CO 2 lasers has been demonstrated. Phase matched mixing in proustite of 10 μm laser radiation and the output of a single-mode Nd:YAG laser has permitted Fabry-Pérot interferograms, at the 0.96 μm sum frequency, to be recorded with the aid of a conventional image converter tube.
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