Abstract

Broadband mid-IR output suitable for producing 1000-nm-wide frequency combs centered at 4.9μm was achieved in a degenerate subharmonic optical parametric oscillator (OPO) based on 500-μm-long Brewster-angled orientation-patterned GaAs crystal. The OPO was synchronously pumped at 182MHz repetition rate by 100fs pulses from a Cr2+:ZnSe laser with the central wavelength of 2.45μm and the average power of 100mW.

© 2011 Optical Society of America

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