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Narrow-bandwidth, ~100 ps seeded optical parametric generation in CdSiP2 pumped by Raman-shifted pulses at 1198 nm

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Abstract

Low-threshold, efficient optical parametric generation at 4.64μm is demonstrated using CdSiP2 nonlinear crystal pumped by 150 ps Raman shifted pump pulses at 1198 nm in noncritical configuration at 1 kHz repetition rate. Maximum single pulse idler energy of 6 μJ and total conversion efficiency of 30% are achieved. Seeding at the signal wavelength with a distributed feedback laser diode enables 25 fold narrowing of the bandwidths down to 10GHz, resulting in a Fourier product of 1 for the 100ps long signal (1615 nm) and idler (4.64 μm) pulses.

© 2013 Optical Society of America

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