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Heterodyne efficiency of quadrant photodetectors

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Abstract

In this paper we compare quadrant heterodyne efficiencies. Differences in efficiencies between circular and square detectors are small while relative spacing between quadrants is more important in its effect on efficiencies. Spot size relative to detector size is also important. The effect of angular misalignment on efficiency is smallest for the Airy–Airy combination.

© 1989 Optical Society of America

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