Optical parametric oscillation has been achieved in a 1.9-mm-thick organic nonlinear optical crystal of NPP [N-(4-nitrophenyl)-L-prolinol]. Tunability from 0.9 to 1.7 μm is obtained for the first time in an organic crystal with a maximum total conversion efficiency of about 5%. Considerable possibilities for further optimization are available.
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Josse et al. (1992) studied this question.
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