Magneto-optic spectrophotometer

Details Magneto-optic spectrophotometer Magneto-optic spectrophotometer

1976-12-02

1979-08-28

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrophotometer

356312, G01J 342

Patent

active

041659376

ABSTRACT:
A magneto-optic spectrophotometer for detection or identification of atoms or molecules contained in the sample by utilizing phenomena of birefringence or rotation of polarization caused by the atoms or the molecules in a magnetic field is constructed as follows. Linearly polarized lights are incident on a space where atoms or molecules to be detected exist in a magnetic field. The lights having passed through said space are separated into two beams of lights of polarization components perpendicular and parallel to the polarization of the incident lights. The perpendicular components are used as the signal lights, and the parallel components the reference lights. The signal lights and the reference lights are spectrally analyzed by a wavelength selector in which a signal light and a reference light of a wavelength to be selected are incident on an identical dispersive element. The signal lights and the reference lights are detected by respective detectors. Then, the ratios of the outputs of the signal light detectors to the outputs of the reference light detectors are obtained. By this construction the intensities of the scattered lights by atoms or molecules to be detected can precisely be measured.

REFERENCES:
patent: 3937577 (1976-02-01), Dorsch

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