Abstract

We report a pulsed doubly resonant optical parametric oscillator that uses an original entangled-cavity geometry. This compact source (total volume of 1 L, including the pump laser) displays single-frequency operation (linewidth, $<100 \mathrm{MHz}$), a high repetition rate $\left(>10 \mathrm{kHz}\right)$, low threshold $\left(<10 \mathit{\mu }\mathrm{J}\right)$, and wide tuning in the mid-infrared. These properties qualify pulsed doubly resonant optical parametric oscillators as powerful tools for applications in such fields as nonlinear spectroscopy, lidar, and pollutant detection.

© 2002 Optical Society of America

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