Laser apparatus
US11539185B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Mar 23, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Jul 13, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0623
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser apparatus includes: a light source configured to generate laser light; and an optical negative feedback unit configured to narrow a spectral line of the laser light using optical negative feedback. A modulation signal is input to the light source to modulate a frequency of the laser light. A modulation amount in the frequency of the laser light is detected. A modulation sensitivity is calculated from (i) the modulation amount and (ii) an intensity of the modulation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.