Apparatus for double-beaming in fourier spectroscopy

Details Apparatus for double-beaming in fourier spectroscopy Apparatus for double-beaming in fourier spectroscopy

1976-03-01

1978-06-20

McGraw, Vincent P.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

G01B 902

Patent

active

040958990

ABSTRACT:
A technique for performing double-beaming in Fourier spectroscopy which is capable, in a single output, of measuring the spectra of desired radiation while suppressing the spectra of unwanted radiation. This technique is accomplished by feeding a pair of input beams on opposite faces of a beamsplitter at a preselected location thereon. In this manner radiation which is common to both input beams will be suppressed in the output interferogram.

REFERENCES:
patent: 3897154 (1975-07-01), Hawes
"Double-beaming Technique in Fourier Spectroscopy," Vanasse et al.; Applied Optics; vol. 15, #2; Feb. 1976.

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