Compact infrared continuous-wave double-pass single-frequency doubly-resonant OPO
Anne Boucon (LAC, BLUE I&S), Bertrand Hardy-Baranski (BLUE I&S),, Fabien Bretenaker (LAC)
TL;DR
This paper presents a compact, single-frequency, doubly-resonant optical parametric oscillator with a double-pass pump setup, enabling efficient, tunable infrared emission suitable for gas detection.
Contribution
It introduces a novel double-pass pump configuration for a compact DRO that achieves single-mode operation, low threshold, and continuous wavelength tuning.
Findings
Operates in the 3200-3800 nm range for gas detection
Achieves low threshold pump power compatible with diode lasers
Maintains single longitudinal mode with high efficiency
Abstract
We demonstrate a compact continuous-wave single-frequency doubly-resonant optical parametric oscillator (DRO) in a double-pass pump configuration with a control of the relative phase between the reflected waves. The nested DRO cavity allows single longitudinal mode operation together with low threshold and high efficiency. Thermal effects are managed by chopping the pump beam, allowing continuous tuning of the emitted wavelength. The infrared idler wave (3200-3800 nm) can be used for gas detection and the threshold pump power is compatible with diode pumping.
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