Broadband protector for photodetectors
US5739950A · kind A · utility
1Cited by
6References
5Claims
0Family size
Inventors
Key dates
| Filing date | Sep 1, 1989 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Sep 1, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A trilaminar semiconductor device is placed at an intermediate focus is an optical instrument having a sensitive photodetector. The layers of the device are successively in the form of a two-photon absorber, a sacrificial layer, and a multiple quantum well. The composition of the semiconductor is varied in the layers to achieve the desired bandgap and function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.