Coating for optimising output coupling of em radiation
US7626756B2 · kind B2 · utility
5Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2007 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jan 26, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/13
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coating between a nonlinear crystal and a silicon prism coupler, prevents transmission of radiation scattered within the crystal by filtering out frequencies outside the silicon bandgap to avoid free carrier absorption, but transmits THz frequencies that correspond to the bandgap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.