No.2（2007）11.Development of a relative spectral responsivity mesurment system (I)

Hirotaka Nakamura, Toshihide Iwanaga, Tetsuo Yamamoto, Toshiharu Nakajima

The spectral responsivity of a photodetector, that is, its sensitivity at each wavelength, is an important characteristic, essential in the accurate measurement of the emission spectrum of light sources. The precise measurement of the spectral responsivity and the maintenance of a spectral responsivity measurement system are important for the photometric characterization of light sources such as fluorescent lamps, incandescent lamps, LED's, and EL's. The spectral responsivity measurement techniques are equally useful in the photodetector assessment and in the evaluation of newly fabricated photodetectors. We propose a relative spectral responsivity measurement system for the spectral range from 250 nm to 2500 nm. In this study we report on the construction and the evaluation results of such a system working in the spectral range from 250 to 1150 nm.

Keywords

spectral responsivity, photodetector, satandard detector

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