Laser apparatus
US6539037B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Dec 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1304
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser apparatus has a function to easily select a component having a wavelength near to an oscillated wavelength of a laser beam from among components of a reference beam having a spectral distribution, which is already known, as a reference in measurement of the oscillated wavelength of the laser beam. The laser apparatus has a laser oscillator for outputting a laser beam, a reference light source for outputting a reference beam having a spectral distribution which is already known, two spectrum separation units having different resolving power, a detecting device for detecting a part of the laser beam and a part of the reference beam separated by the two spectrum separation units, and a control unit for measuring an oscillated wavelength of the detected laser beam by using as a reference a component selected from among components of the detected reference beam and having a wavelength near to the oscillated wavelength of the detected laser beam. According to the laser apparatus, the component having the wavelength near to the oscillated wavelength of the laser beam can be easily selected from among the components of the reference beam as a reference in measurement of the wavelen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.