Spectroscopic detection system and method
US8472022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | May 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1398
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for spectroscopic detection of loss in a resonator cavity is disclosed. The system can include a number of components. A tunable laser source can generate a laser beam. A frequency locking system can lock the frequency of the laser beam to a resonance of the resonator cavity or lock the length of the cavity to the frequency of the laser beam. The first modulation element can modulate the laser beam at a first modulation frequency to generate a modulated laser beam. The input coupler can direct the modulated laser beam into the resonator cavity. The first directing element can direct a first portion of light reflected from the input coupler to a first photodetector. The first demodulator can demodulate the first modulation signal to generate a first error signal which is a function of the loss in the resonator cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.