Development of a multipixel hybrid photodetector with high quantum efficiency and gain

M. Suyama, A. Fukasawa, J. Haba, T. Iijima, S. Iwata, M. Sakuda, T. Sumiyoshi, F. Takasaki, M. Tanaka, T. Tsuboyama, Y. Yamada

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


A hybrid photodetector (HPD) consisting of a photocathode and a multipixel avalanche diode (MP-AD) was developed a few years ago. Our previous studies showed that its inherent potential for high resolution photon counting could be further enhanced by reducing fluctuations in charge loss in the dead layer at the entrance of the MP-AD. In this paper, we report on the improvement with the newly developed HPD whose encapsulated MP-AD has a thinner dead layer than before. It is demonstrated that the new HPD has much better energy resolution, which enables clearer counting up to nine photoelectrons. Further enhancement of the photocathode sensitivity of the HPD is also discussed.

Original languageEnglish
Pages (from-to)1056-1059
Number of pages4
JournalIEEE Transactions on Nuclear Science
Issue number3 III
Publication statusPublished - Jun 2004
Externally publishedYes


  • Hpd, multipixel
  • Hybrid photodetctor
  • Photon sensor
  • Single photon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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