High-performance HPD for photon counting

A. Fukasawa; A. Kamiya; S. Muramatsu; Y. Negi; M. Suyama

doi:10.1117/12.883605

13 May 2011 High-performance HPD for photon counting

A. Fukasawa, A. Kamiya, S. Muramatsu, Y. Negi, M. Suyama

Proceedings Volume 8033, Advanced Photon Counting Techniques V; 80330S (2011) https://doi.org/10.1117/12.883605
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

We have developed a new Hybrid Photo-Detector (HPD) with relatively large effective area, fast time response, high timing resolution, high quantum efficiency and extremely low probability of afterpulse. A GaAsP (Gallium Arsenide Phosphide) photocathode type has high quantum efficiency approximately 45% around the wavelength of 500 nm, and the size of the effective area is 3 mm in diameter. The pulse height for single photon is approximately +2 mV with 50 ohm load impedance, and it can be easily observed with a fast response oscilloscope. The rise and fall times for impulse light are approximately 0.4 ns. The timing resolution for single photon for the GaAsP photocathode type was estimated to be approximately 80 ps.

Citation Download Citation

A. Fukasawa, A. Kamiya, S. Muramatsu, Y. Negi, and M. Suyama "High-performance HPD for photon counting", Proc. SPIE 8033, Advanced Photon Counting Techniques V, 80330S (13 May 2011); https://doi.org/10.1117/12.883605

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