PHOTODETECTOR Russian patent published in 2004 - IPC

FIELD: time-space distribution of interference field amplitude and phase.

SUBSTANCE: proposed photodetector has two interference-sensing layers relatively offset in plain parallel to these layers. Difference in optical distances from plane parallel to photoelectric layers that confines photodetector on one end to photoelectric layer optically distant from this plane and from the latter to photoelectric layer optically near this plane equals Δl_1opt = k₁λ/2 + k₂λ/4 + λ/8, and also difference in optical distances from plane parallel to photoelectric layers that confined photodetector on other end to photodetector layer optically distant from this plane and from this plane to photoelectric layer optically near this plane equals Δl_2opt = k₃λ/2 + k₂λ/4 + λ/8, where λ is wavelength of radiation being recorded; k₁, k₂, k₃ are any other-than-negative integer numbers.

EFFECT: quadrature signal generation during photodetector motion in interference field of opposing light fluxes.

1 cl, 3 dwg