Multi-mode high-dynamic-range photodetecting scheme based on the novel gate-controlled lateral thyristor

Keyang Sun; Liyang Pan

doi:10.1117/12.2549427

20 December 2019 Multi-mode high-dynamic-range photodetecting scheme based on the novel gate-controlled lateral thyristor

Keyang Sun, Liyang Pan

Author Affiliations +

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 1120944 (2019) https://doi.org/10.1117/12.2549427
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

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.

Citation Download Citation

Keyang Sun and Liyang Pan "Multi-mode high-dynamic-range photodetecting scheme based on the novel gate-controlled lateral thyristor", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 1120944 (20 December 2019); https://doi.org/10.1117/12.2549427

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