Multioscillator with combined optical and electronic signal proc

Details Multioscillator with combined optical and electronic signal proc Multioscillator with combined optical and electronic signal proc

1994-02-23

1996-04-02

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902

Patent

active

055045790

ABSTRACT:
An output system for a multioscillator includes a mixture of optical and electronic subsystems for separating and deriving the a.c. and d.c. HET signals of the right and left circularly polarized modes. An output prism includes a plurality of optical coatings for introducing predetermined phase shifts between the s and p components of light derived from the beams that counterpropagate within the cavity. A pair of polarizers receive the output beams from the prism. Predetermined orientations of the polarizers provide differential intensities for the HET outputs of right and left circularly polarized light, thereby enabling photodetectors to generate electrical signals representative of the a.c. and d.c. HET outputs of left or right circularly polarized light. An output circuit includes high and low-pass filters for separating the a.c. and d.c. HET signals for each polarization.

REFERENCES:
patent: 4449824 (1984-05-01), Matthews
patent: 5116132 (1992-05-01), Mitchell et al.

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