High-efficiency near- and mid-IR intra-cavity OPO
2010
The near and mid-IR spectral region is of significant interest due to the atmospheric windows
present in this region. Applications of lasers operating in this spectral region range from their use in remote
sensing LIDAR, IR counter measures (IRCM), spectroscopy and Chemical, Biological, Radiological,
Nuclear, and Explosives (CBRNE) sensing systems. We report the development of a compact, highly
efficient, high power intra-cavity pumped all-solid-state optical parametric oscillator (OPO) producing
nanosecond pulses at kHz repetition rates with an output tunable from 1.5 microns to 3.4 microns with
pulse energies up to 10mJ. With our novel Intra-Cavity OPO design, pump to signal conversion efficiencies
up to 65% (which is very close to its quantum efficiency) at room temperature are achievable.
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