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We report the continuous mode-locked operation of a picosecond, singly-resonant, synchronously-pumped optical parametric oscillator (SPOPO) based on ZGP. The ZGP SPOPO emits in the 4-6 μm range with signal power higher than 800 mW.
Here, we propose to apply to Cr2+:ZnSe an original mode-locking technique, using an intracavity second order nonlinear mirror, and efficiently demonstrated on near-infrared (lambda=1 mum) laser sources. Indeed, efficiency and reliability reached by second order non linear crystals, such as PPLN, allow a transposition of the nonlinear mirror concept from near-infrared to mid-infrared laser sources...
For CO2 differential-absorption LIDAR, the single-mode output of a type-II PPLN entangled-cavity nanosecond doubly-resonant OPO emitting at 2.05 mum is amplified to 11 mJ, with 3 MHz rms frequency stability and a M2 < 1.9.
We demonstrate 100 GHz continuous tuning and plusmn3 MHz frequency stabilization of the signal radiation delivered by an entangled cavity nanosecond OPO while the frequency fluctuation of the pump radiation is larger than 500 MHz.
We present what we believe to be the first demonstration of high resolution molecular spectroscopy in the mid-infrared by a free running pulsed optical parametric oscillator. Absorption spectroscopy of N2 O is demonstrated as an application
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