Parametric frequency converter
US4063195A · kind A · utility
44Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Mar 26, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/39
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In the disclosed parametric frequency converter a dc electric field is utilized to remove spatial inversion symmetry of NH.sub.2 D gas molecules contained in a Stark cell. Simultaneous introduction into the Stark cell of a laser beam at a frequency f.sub.1 (e.g., corresponding to about 10.6 .mu.m) and microwaves at a frequency f.sub.2 (e.g., about 4.1 GHz) produces resonantly enhanced parametric mixing of the frequencies f.sub.1 and f.sub.2, resulting in the generation of a laser beam at the difference frequency f.sub.3 = f.sub.1 - f.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.