20 February 2017 Single-frequency tunable long-wave infrared OP-GaAs OPO for gas sensing
Author Affiliations +
We report on the first single-frequency nanosecond optical parametric oscillator (OPO) emitting in the longwave infrared, and use it to perform standoff detection of ammonia vapor by differential spectrometry. The OPO is based on orientation-patterned GaAs (OP-GaAs) pumped by a pulsed single-frequency Tm:YAP microlaser. Single-longitudinal mode emission is obtained owing to a nested cavity OPO (NesCOPO) scheme. The OPO is tuned over 700 nm around 10.4 μm, allowing to measure the absorption spectrum of ammonia across several lines at atmospheric pressure. The potential of this OPO for standoff detection of hazardous gases is also discussed.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Armougom, J. Armougom, Q. Clément, Q. Clément, J.-M. Melkonian, J.-M. Melkonian, J.-B. Dherbecourt, J.-B. Dherbecourt, M. Raybaut, M. Raybaut, A. Grisard, A. Grisard, E. Lallier, E. Lallier, B. Gérard, B. Gérard, B. Faure, B. Faure, G. Souhaité, G. Souhaité, A. Godard, A. Godard, } "Single-frequency tunable long-wave infrared OP-GaAs OPO for gas sensing", Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, 100880Z (20 February 2017); doi: 10.1117/12.2255620; https://doi.org/10.1117/12.2255620


Back to Top