发明名称 |
PHOTODETECTOR |
摘要 |
A photodetector 1A comprises an optical element 10, having a structure including first regions and second regions periodically arranged with respect to the first regions along a plane perpendicular to a predetermined direction, for generating an electric field component in the predetermined direction when light is incident thereon along the predetermined direction; arid a semiconductor multilayer body 4 having a quantum cascade structure, arranged on the other side opposite from one side in the predetermined direction with respect to the optical element, for producing a current according to the electric field component in the predetermined direction generated by the optical element 10; while the quantum cascade structure includes an active region 4b having a first upper quantum level and a second upper quantum level lower than the first upper quantum level, and an injector region 4c for transporting an electron excited by the active region 4b. |
申请公布号 |
US2015053922(A1) |
申请公布日期 |
2015.02.26 |
申请号 |
US201314390842 |
申请日期 |
2013.05.10 |
申请人 |
HAMAMATSU PHOTONICS K.K. |
发明人 |
Nakajima Kazutoshi;Yamanishi Masamichi;Fujita Kazuue;Niigaki Minoru;Hirohata Toru;Yamashita Hiroyuki;Akahori Wataru |
分类号 |
H01L31/0216;H01L31/0232;H01L31/0352 |
主分类号 |
H01L31/0216 |
代理机构 |
|
代理人 |
|
主权项 |
1. A photodetector comprising:
an optical element, having a structure including first regions and second regions periodically arranged with respect to the first regions along a plane perpendicular to a predetermined direction, for generating an electric field component in the predetermined direction when light is incident thereon along the predetermined direction; and a semiconductor multilayer body having a quantum cascade structure, arranged on the other side opposite from one side in the predetermined direction with respect to the optical element, for producing a current according to the electric field component in the predetermined direction generated by the optical element; wherein the quantum cascade structure includes: an active region having a first upper quantum level and a second upper quantum level lower than the first upper quantum level; and an injector region for transporting an electron excited by the active region. |
地址 |
Hamamatsu-shi, Shizuoka JP |