Abstract

High-power (110 mW) mid-IR output suitable for producing ultra-broadband frequency combs in the mid-infrared portion of the spectrum was produced in a subharmonic optical parametric oscillator (OPO) based on orientation patterned GaAs. The OPO was synchronously pumped by a compact 0.5-W femtosecond Cr:ZnS oscillator with the central wavelength 2.38 μm at pulse repetition frequency 175 MHz.

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