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Proceedings Paper

Multi-mode high-dynamic-range photodetecting scheme based on the novel gate-controlled lateral thyristor
Author(s): Keyang Sun; Liyang Pan
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Paper Abstract

We have proposed a novel gate-controlled lateral thyristor (GC-LT) and a pixel circuit featuring intrinsic high dynamic range by multi-mode operation. The novel gate-controlled lateral thyristor structure with high sensitivity for weak light is designed. A cooperative pixel circuit is proposed to establish multi-sampling modes. Experimental results show that the gate-controlled lateral thyristor has high sensitivity for weak-light since the minimum distinguishable signal is as low as 1×10-9W/cm2 due to the cycle amplification between cross-coupled bipolar transistors inside the detector. In addition, more than four orders of light intensity from 10-6 to 10-2W/cm2 can be detected by linear mode and logarithmic mode. A high dynamic range more than 140dB are achieved using the pixel circuit by multi-mode operation.

Paper Details

Date Published: 20 December 2019
PDF: 5 pages
Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 1120944 (20 December 2019); doi: 10.1117/12.2549427
Show Author Affiliations
Keyang Sun, Tsinghua Univ. (China)
Liyang Pan, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 11209:
Eleventh International Conference on Information Optics and Photonics (CIOP 2019)
Hannan Wang, Editor(s)

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