2 July 1998 Quadrant detector based on InGaAsP heterostructures
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Proceedings Volume 3405, ROMOPTO '97: Fifth Conference on Optics; (1998) https://doi.org/10.1117/12.312709
Event: ROMOPTO '97: Fifth Conference on Optics, 1997, Bucharest, Romania
A new device called selective quadrant-detector, realized on the basis of InGaAsP heterostructures, is presented in the paper. It consists of a circular photodiode-quadrant with protective peripheric ring, having selective sensibility optimized for (lambda) equals 1.06 micrometers , in the center of which a photodetector integrated in the same crystal is formed. The photodetector has own capacity C equals 1 - 5 pF and can be used for receiving the high frequency (f > 1 GHz) optic signals and the small duration (t <EQ 1 ns) unitary signals. The presence of central photodetector decreases the coordinate characteristic abruptness (K equals 8(DOT)103 V(DOT)W-1(DOT)mm-1(and photocurrent intensity with 8 - 10%. Absolute spectral sensibility is S(lambda equals1.06) equals 0.57 A/W and photosensibility spectrum semiwidth is (Delta) (lambda) <EQ 100 nm.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Valerian Dorogan, Vladimir I. Brynzari, Tatiana Vieru, V. Kosyak, "Quadrant detector based on InGaAsP heterostructures", Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); doi: 10.1117/12.312709; https://doi.org/10.1117/12.312709


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