著者

青木 昌治 福家 俊郎

出版者

公益社団法人 応用物理学会

雑誌

応用物理 (ISSN:03698009)

巻号頁・発行日

vol.36, no.6, pp.422-435, 1967 (Released:2009-02-20)

参考文献数

76

被引用文献数

1

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Different theories on the Franz-Keldysh effect are briefly described with the experimental results on the electro-absorption effect for GaAs, Si and other materials, and the experimental results are compared with the theories. The experiments and the analysis of the electro-reflectance effect are also introduced. The practical applications of the Franz-Keldysh effect such as a modulating device of light intensity, a light deflection device and a light-activated negative registance device are discussed. According to the authors' work on the electro-absorption effect in CdS crystals, 90_??_95%' modulation has been obtained under a modulating field of 0.95×105 V/cm, using a specimen of 100μm thick and wavelength of 5120Ä. The frequency response of the effect has been concluded to be flat up to 107 Hz from the result in an application of a pulsed voltage.