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High peak power subpicosecond optical pulses have been generated by parametric amplification of a white-light femtosecond continuum in a new organic crystal, N-(4-nitrophenyl)-L-prolinol or (NPP), with an emission spectrum extending in the 1.0–1.6 μm range. [ABSTRACT FROM AUTHOR]

Second-harmonic generation was observed in a 7-mm-thick 3-methyl-4-nitropyridine-1-oxide crystal at the 1.32 and 1.34 μm emission lines of a Q-switched, mode-locked Nd3+:YAG laser, emitting short pulses of duration of 160 ps. A remarkably high effective conversion rate of 50% was measured by pump depletion in a type-I phase-matched configuration. [ABSTRACT FROM AUTHOR]

A new method for time-resolved luminescence spectroscopy with subpicosecond resolution is proposed in the 1–1.6 μm spectral range, using parametric amplification in a highly nonlinear organic crystal. This technique is used to characterize the luminescence of an infrared dye and of an InGaAs-InAlAs multiple quantum well structure. [ABSTRACT FROM AUTHOR]