Translator Disclaimer
6 July 2011 HgCdTe APD-based linear-mode photon counting components and ladar receivers
Author Affiliations +
Linear mode photon counting (LMPC) provides significant advantages in comparison with Geiger Mode (GM) Photon Counting including absence of after-pulsing, nanosecond pulse to pulse temporal resolution and robust operation in the present of high density obscurants or variable reflectivity objects. For this reason Raytheon has developed and previously reported on unique linear mode photon counting components and modules based on combining advanced APDs and advanced high gain circuits. By using HgCdTe APDs we enable Poisson number preserving photon counting. A metric of photon counting technology is dark count rate and detection probability. In this paper we report on a performance breakthrough resulting from improvement in design, process and readout operation enabling >10x reduction in dark counts rate to ~10,000 cps and >104x reduction in surface dark current enabling long 10 ms integration times. Our analysis of key dark current contributors suggest that substantial further reduction in DCR to ~ 1/sec or less can be achieved by optimizing wavelength, operating voltage and temperature.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael Jack, Justin Wehner, John Edwards, George Chapman, Donald N. B. Hall, and Shane M. Jacobson "HgCdTe APD-based linear-mode photon counting components and ladar receivers", Proc. SPIE 8033, Advanced Photon Counting Techniques V, 80330M (6 July 2011);


HgCdTe APDs for free space optical communications
Proceedings of SPIE (February 15 2018)
HgCdTe APDs for low-photon number IR detection
Proceedings of SPIE (January 27 2017)
HgCdTe APDS for space applications
Proceedings of SPIE (November 17 2017)
Advances in HgCdTe APDs and LADAR receivers
Proceedings of SPIE (May 03 2010)

Back to Top