Passively Q-switched 1.57-microm intracavity optical parametric oscillator
| Autor: | Yuri Yashkir, Henry M. van Driel |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Materials science
business.industry Materials Science (miscellaneous) Energy conversion efficiency Rate equation Laser Q-switching Optical parametric amplifier Industrial and Manufacturing Engineering Transverse mode Intensity (physics) law.invention Optics law Optical parametric oscillator Optoelectronics Business and International Management business |
| Zdroj: | Applied optics. 38(12) |
| ISSN: | 1559-128X |
| Popis: | We demonstrate an eye-safe KTP-based optical parametric oscillator (OPO) driven intracavity by a diode-pumped 1064-nm Nd:YAG laser, passively Q-switched by a Cr4+:YAG crystal. The characteristics of this system, which operates at 1570 nm with a repetition rate as high as 50 Hz, are studied as a function of Cr4+:YAG optical density. Under optimum conditions the OPO generates 1.5-mJ, 3.4 +/- 0.1-ns pulses in a single transverse mode. For a Cr4+:YAG Q-switch element with an optical density of 0.5 the conversion efficiency of the intracavity energy is approximately 45% with the ratio of OPO to Nd:YAG peak-pulse intensity exceeding unity. These and other OPO characteristics compare favorably with a simple rate equation model of the OPO dynamics. |
| Databáze: | OpenAIRE |
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