Tuning of etalons in spectroscopic apparatus

Details Tuning of etalons in spectroscopic apparatus Tuning of etalons in spectroscopic apparatus

1976-10-26

1978-05-30

McGraw, Vincent P.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250204, 356112, G01B 902

Patent

active

040920704

ABSTRACT:
Light passing through an etalon is divided into three beams, each beam being incident to the etalon at a different angle. Two of the beams are received by detectors which generates intensity representative signal for each beam. The difference between the beam intensities represents the error between the etalon's passband and the wavenumber of the received light.

REFERENCES:
patent: 3914055 (1975-10-01), Wolga et al.

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