Optical Dielectric Breakdown of Alkali-Halide Crystals by Q-Switched Lasers
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概要
- 論文の詳細を見る
The intrinsic breakdown in alkali-halides induced by Q-switched glass and ruby lasers is reported. The threshold electric fields for optical breakdown are nearly equal to the D.C. impulse breakdown fields. The results of laser-induced charge collection show that the collected charges increase in proportion to I^n (I: laser light intensity, n: constant) at power levels below the breakdown threshold. In the pre-breakdown region, however, the collected charges increase exponentially with increasing laser intensity leading to final breakdown. From these results the mechanism of laser-induced breakdown in alkali-halide crystals is concluded as follows : free electrons produced by multiphoton ionization from shallow donor levels such as color centers are accelerated by the laser electric field and cause avalanche impact ionization, which is analogous to the case of D.C. breakdown.
- 社団法人応用物理学会の論文
- 1975-06-05
著者
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INUISHI Yoshio
Department of Electrical Engineering, Faculty of Engineering, Osaka University
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OHMORI Yutaka
Department of Electronic Engineering, Faculty of Engineering, Osaka University
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Yasojima Yoshiyuki
Department Of Electrical Engineering Faculty Of Engineering Osaka University:central Research Labora
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Ohmori Yutaka
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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Inuishi Yoshio
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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Okumura Norio
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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