Optical frequency stability controller

Details Optical frequency stability controller Optical frequency stability controller

1996-10-10

1998-05-26

Font, Frank G.

Optics: measuring and testing

By particle light scattering

With photocell detection

356243, 356357, G01B 902

Patent

active

057574880

ABSTRACT:
The present invention is a method for calibrating power spectral data obtained with an interferometer based Fourier transform spectrometer which utilizes a laser based coherent radiant source as the metrology source. A radiant beam of predetermined wavelength from a neon lamp based noncoherent radiant source is directed in parallel with a radiant beam from the laser source into the interferometer to create a laser based interference pattern and a neon lamp based interference pattern. Distinct fringe counts are derived from the laser based interference pattern and the neon lamp based interference pattern. The wavelength of the laser source is determined based on a correlation between the known wavelength of the neon lamp based interference pattern and the determined fringe counts. The scale of the power spectral data is calibrated based on the determined wavelength of the laser source.

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patent: 5110211 (1992-05-01), Niki et al.
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patent: 5302823 (1994-04-01), Franklin et al.
patent: 5373515 (1994-12-01), Wakabayashi et al.
patent: 5402227 (1995-03-01), Schuma

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