Effects of Pulse Rate and Temperature on Nonlinear Absorption of Pulsed 262-nm Laser Light in $\beta$-BaB2O4
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概要
- 論文の詳細を見る
The efficiency of multi-watt ultraviolet radiation generation by harmonics processes in $\beta$-BaB2O4 (BBO) can be improved by reducing thermal dephasing. The dephasing arises from local heating of BBO by the linear absorption of green (second harmonic) and ultraviolet (fourth harmonic) radiation by crystal defects that are induced by two-photon absorption of high peak power ultraviolet radiation. Such absorption can be reduced by decreasing the repetition rate to ${\sim}1$ kHz to allow the defects to decay between the laser pulses and/or heating BBO crystal to 150–200 °C to increase the decay rate of the induced defects.
- 2010-08-25
著者
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SARUKURA Nobuhiko
Institute for Molecular Science
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Cadatal-raduban Marilou
Institute Of Laser Engineering Osaka University
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Shimizu Toshihiko
Institute Of Laser Engineering Osaka University
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Takahashi Masakuni
Central Research Institute, Mitsubishi Materials Corporation, 1002-14 Mukohyama, Naka, Ibaraki 311-0102, Japan
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Osada Akira
Central Research Institute, Mitsubishi Materials Corporation, 1002-14 Mukohyama, Naka, Ibaraki 311-0102, Japan
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Dergachev Alex
Q-Peak Inc., 135 South Road, Bedford, MA 01730, U.S.A.
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Moulton Peter
Q-Peak Inc., 135 South Road, Bedford, MA 01730, U.S.A.
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Cadatal-Raduban Marilou
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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