| 摘要 |
<p>An infrared-sensitive multiple photon detector has at least two detectors 1 and 10 in vacuum and cooled by finger 14. The detectors are arranged one behind the other, without touching, in the path of a beam to be investigated. Detector 1 is a small gold-doped germanium rod having a substantially rectangular surface and layer 4 for reducing the reflection of incident radiation. Beam exit surface 2 has a convex shape, so that the radiation not absorbed by the germanium detector is focused onto substantially smaller CdHgTe detector 10. The germanium detector absorbs short-wave radiation and the CdHgTe detector absorbs long-wave radiation. <IMAGE></p> |
