发明授权
- 专利标题： Photodetector having a near field concentration
- 专利标题（中）： 具有近场浓度的光电探测器
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申请号： US10582796申请日： 2004-12-07
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公开(公告)号： US07622703B2公开(公告)日： 2009-11-24
- 发明人: Alfredo De Rossi , Mathieu Carras , Philippe Bois
- 申请人： Alfredo De Rossi , Mathieu Carras , Philippe Bois
- 申请人地址： FR
- 专利权人： Thales
- 当前专利权人： Thales
- 当前专利权人地址： FR
- 代理机构： Lowe Hauptman Ham & Berner, LLP
- 优先权： FR0314717 20031216
- 国际申请： PCT/EP2004/053324 WO 20041207
- 国际公布： WO2005/069385 WO 20050728
- 主分类号： H01L29/06
- IPC分类号： H01L29/06
摘要：
The field of the invention is that of photodetectors (10), and more precisely so-called quantum well photodetectors operating in the medium infrared, known by the acronym QWIP standing for Quantum Well Infrared Photodetector.It is an object of the invention to increase the detectivity of the detectors by significantly reducing the surface area of the detection zone while conserving the incident flux. This result is obtained by arranging a structure (4) or grating on the active zone (31) of the photodetector (10), which couples the incident wave and confines it on the active zone (31).The major features of this structure (4) or this grating are that it comprises patterns or grooves having a first spatial frequency and a second spatial frequency, and also comprising a central defect.
公开/授权文献
- US20070085114A1 Photodetector having a near field concentration 公开/授权日：2007-04-19
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