Single sideband frequency modulated laser measurement for detecting a difference in a propagation distance
US11415406B2 · kind B2 · utility
1Cited by
2References
13Claims
0Family size
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Key dates
| Filing date | Dec 17, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Dec 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/08027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser apparatus, a measurement apparatus, and a measurement method are provided in which the laser apparatus outputs a frequency-modulated laser beam with a plurality of modes and includes: an optical cavity that has a gain medium for amplifying a light to be input, and an optical SSB modulator for shifting a frequency of the light amplified by the gain medium: and a control part that controls the optical SSB modulator to shift a frequency of a light to be input to the optical SSB modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.