FIELD: photodetectors.
SUBSTANCE: proposed photodetector has transparent substrate with two interference-sensing photoelectric cells and electrodes. Difference in optical distances from plane perpendicular to light beam being measured that confines photoelectric cell and from second photoelectric cell to this plane Δlopt = kλ/4, where λ is wavelength of photodetector spectral sensitivity extreme; k is positive integer number.
EFFECT: ability of generating in-phase and antiphase signals for opposing light fluxes selective with respect to interference-field measurement wavelength.
1 cl, 4 dwg
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Authors
Dates
2004-12-27—Published
2002-02-28—Filed