Abstract

We report on the design and characterization of a highly coherent mid-IR source at 3.57 μm based on a single-frequency optical parametric oscillator. Detailed frequency and amplitude noise spectra have been measured. The rms intensity noise from 1.2 to 1000 Hz was 0.03%, and a rms frequency drift of 8  kHz in 1  ms was observed. We have also demonstrated the utility of this source for coherent laser radar applications by measuring micro-Doppler spectra from vibrating targets.

© 2001 Optical Society of America

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