Molecular fingerprint-region spectroscopy from 5-12 μm using an orientation-patterned gallium phosphide optical parametric oscillator

Abstract

We report a femtosecond optical parametric oscillator (OPO) based on the new semiconductor gain material orientation patterned gallium phosphide (OP-GaP), which enables the production of high-repetition-rate femtosecond pulses spanning 5-12 μm with average powers in the few to tens of milliwatts range. This is the first example of a broadband OPO operating across the molecular fingerprint region, and we demonstrate its potential by conducting broadband Fourier-transform spectroscopy using water vapor and a polystyrene reference standard.

arXiv comment4 pages, 5 figures

References in corpus (2)

• Mid-infrared frequency combs
• Cavity-enhanced dual-comb spectroscopy

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