Avalanche photomultiplier tube

Details Avalanche photomultiplier tube Avalanche photomultiplier tube

1992-06-02

1994-05-10

Hille, Rolf

Active solid-state devices (e.g., transistors, solid-state diode

Heterojunction device

Light responsive structure

257434, 257438, 257461, H01L 2714, H01L 3100

Patent

active

053110447

ABSTRACT:
A small, rugged photomultiplier tube is achieved by closely spacing a large area avalanche "photodetector" with respect to a photocathode in an opaque casing having a window for incident light. The photocathode and the avalanche photodetector have comparable areas and are closely spaced. The avalanche photodetector includes a PN junction which as to be close to the surface of the detector to maximize the response to electrons and reduce any direct response to light. The need for an electrostatic lens to focus electrons onto the small target characteristic of prior art photomultiplier tubes is obviated.

REFERENCES:
patent: 3889143 (1975-06-01), Gowers
patent: 5021854 (1991-06-01), Huth
patent: 5057892 (1991-10-01), Iwanczyk
patent: 5138147 (1992-08-01), van Aller et al.
patent: 5146296 (1992-09-01), Huth

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