1. Nonlinear tunable parametric luminescence in ZnGeP 2 crystals
- Author
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Yu. M. Andreev, V. A. Verozubova, Gopal C. Bhar, Alexander I. Gribenyukov, and Konstantin L. Vodopyanov
- Subjects
Amplified spontaneous emission ,Birefringence ,Materials science ,business.industry ,Phonon ,Physics::Optics ,Laser ,law.invention ,Crystal ,Wavelength ,Optics ,Mode-locking ,law ,Optoelectronics ,business ,Refractive index - Abstract
Infrared tunability of parametric superluminescence is studied in ZnGeP2. Q-switched and actively mode-locked Er3+:YSGG laser (2.79 micrometers ) is used to investigate the temperature tunability. Angular tunable wavelength gap near degeneracy in type II phase matching is partially covered by crystal temperature rise thereby eliminating beam walk-off/displacement unavoidable in angular tuning. The result is explained by changes in crystal phonon absorption, birefringence and refractive indices with rise in temperature.
- Published
- 1998
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