音響光学フィルタを用いた可変波長光源と分光測定への応用

増田 千尋, 高橋 英郎, 高山 秀人, 津田 武利, 村井 史昌, 宮地 抗一

doi:10.2150/jieij1980.66.4_125

音響光学フィルタを用いた可変波長光源と分光測定への応用

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増田千尋

芝浦工業大学
高橋英郎

芝浦工業大学
高山秀人

芝浦工業大学
津田武利

芝浦工業大学
村井史昌

芝浦工業大学
宮地抗一

芝浦工業大学

書誌事項

タイトル別名

Monochromatic Light Source with Variable Wavelength using an Acoustooptic Tunable Filter and Its Applications for Spectrometry
オンキョウコウガクフィルタオモチイタカヘンハチョウコウゲント

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説明

The construction of a light source with variable wavelength utilizing a combination of an Acoustooptic tunable filter employing a TeO₂ crystal and an incoherent white light source, of which the wavelength and intensity of the optical output is to be arbitrarily controlled, are described. As example of applications, an automatic measuring method for spectrometory are proposed. As a result, the following conclusions are obtained. (1) The optical output power of the apparatus depends on the wavelength characteristics of the feedback system. (2) The spectral reflectance characteristics can be measured automatically by using the combination of a light source with variable wavelength and a microcomputer. (3) The measurement time of the spectral reflectance characteristics is about 10 minutes. (4) The spectral sensitivity and the spectral transmittance characteristics were expressed on an oscilloscope as still picture of the periodic time T≅40ms.