Bleaching and Spectral Shape Modificatiom of CdS Photocurrent due to He -Ne Laser Pumping
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概要
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The influence of He-Ne laser pumping on the photocturrent of a CdS single crystal was studied in the range 450 -700 nm at room temperature. It was observed that the photocurrent was extremely dependent on laser irradiation. A low pump intensity of 64 mW・cm^-2 quenches the photocvurrent by more than three orders of muagnitude. The pumping also induces a spectral shape modification, i.e., a reduction of the gap photocondtuctivity at 500 nm below the photocurrent due to trap levels at 540 nm. The phenomena are explained in terms of two-photon absorption.
- 社団法人応用物理学会の論文
- 1997-06-01
著者
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Ullrich Bruno
Department Of Physics University Of Tokyo
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Kobayashi Takayoshi
Department Of Applied Physics And Chemistry And Institute For Laser Science University Of Electro-co
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DUSHIKINA Natalia
Department of Physics, University of Tokyo
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Dushikina Natalia
Department Of Physics University Of Tokyo
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