Method and apparatus for providing a coherent terahertz source
US6144679A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Jan 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3534
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coherent optical source, having a center frequency in the terahertz band can be generated. Two coherent optical sources of different frequencies can be mixed in a nonlinear crystal to generate an optical source having a third distinct frequency in the terahertz frequency range. The third frequency, an idler frequency, equals the difference between pump and signal wave frequencies incident on the crystal. The pump and signal wave frequencies are selected so that their frequency difference is in the terahertz range and so that the interaction between the pump, signal, and idler wave frequencies is phase matched using a cross-Reststrahlen band dispersion-compensated phasematching technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.