1. Updated thermo-optic coefficients of AgGaS^2 from temperature-tuned noncritical 3ω ω → 2ω infrared parametric amplification
- Author
-
J.-J. Zondy and D. Touahri
- Subjects
Optical amplifier ,Materials science ,business.industry ,Infrared ,Amplifier ,Statistical and Nonlinear Physics ,Laser ,Optical parametric amplifier ,Atomic and Molecular Physics, and Optics ,Semiconductor laser theory ,law.invention ,Optics ,law ,Optoelectronics ,business ,Refractive index ,Diode - Abstract
We report the temperature dependence of a continuous-wave noncritically phase-matched (θ=90°) optical parametric amplifier based on a 15-mm-long silver gallium sulfide crystal (AgGaS2) pumped by a 50-mW near-IR AlGaAs diode laser (λ3=0.843 µm). This amplifier is idler seeded by a 15-mW KCl:Li (FA-II) color-center laser (λ1=2.53 µm) and produces microwatt-range power of a signal radiation at λ2=1.265 µm. Updated linear and thermo-optic data of this chalcopyrite material, such as its room-temperature refractive indices and their temperature dependence, are devised from this type I (eoo) 3:1 frequency-division process and from other published data on noncritically phase-matched difference-frequency generation. The resulting dno,e/dT values reproduce fairly well all of the reported results on temperature phase-matched parametric mixing.
- Published
- 1997