Abstract
Continuous-wave (cw) optical parametric oscillation (OPO) is a stringent test for the assessment of optical quality of nonlinear mid-infrared materials, because of the low intracavity loss (≤1% per round-trip) required to balance the weak cw parametric gain. We observed for the first time parametric oscillation at 2.53 μm (idler) and 1.265 μm (signal) using chalcopyrite AgGaS2 in a triply resonant configuration leading to a pump threshold of 90 mW at λp~845 nm. Strong thermal effects induced by the residual absorption of the crystal are reported and analyzed. In particular, long-term (>30 min) stable single mode-pair operation is observed owing to a passive thermal servo of the cavity optical path length. The effect of thermal lensing under cw operation is also analyzed. We compare the performance of the AgGaS2-TRO with those of a periodically poled lithium niobate (PPLN) OPO, subject to weaker thermal effects.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
