Optics: measuring and testing – By dispersed light spectroscopy – With raman type light scattering
Patent
1996-12-27
1998-05-19
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With raman type light scattering
25033912, G01J 344, G01N 2165
Patent
active
057542899
ABSTRACT:
A Raman scattered light measuring apparatus comprises a near infrared semiconductor laser diode as a light source for irradiating a sample with excitation light, while a photoreceiving part for receiving Raman scattered light from the sample comprises a bandpass filter having a vibration wavenumber which is specific to a sample component to be measured as a central wavelength of its transmission region, and a detector consisting of a photodiode of Ge, InAs or InGaAs or a photomultiplier having sensitivity in a near infrared region for detecting Raman scattered light which is transmitted through the bandpass filter.
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Dou Xiaoming
Ozaki Yukihiro
Uenoyama Harumi
Yamaguchi Yoshinori
Evans F. L.
Kyoto Dai-Ichi Kagaku Co., Ltd.
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