Heterodyne laser instantaneous frequency measurement system
US4940331A · kind A · utility
26Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1988 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Sep 27, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J9/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A heterodyne laser instantaneous frequency measurement system is disclosed. The system utilizes heterodyning of a pulsed laser beam with a continuous wave laser beam to form a beat signal. The beat signal is processed by a controller or computer which determines both the average frequency of the laser pulse and any changes or chirp of the frequency during the pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.