Optical analyzer and wavelength stabilized laser device for analyzer
US9116116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2009 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | May 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0687
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is an optical analyzer which can promote enhancement of measurement sensitivity, cost reduction, size reduction, structural flexibility, disturbance resistance, and the like, at the same time. A laser device to be used in such optical analyzer is also provided. An optical analyzer comprises a laser light source (2); a wavelength selection element (3) for selecting and leading out light having a wavelength substantially equal to the absorption wavelength of an analysis object from among light outputted from the laser light source (2); an optical detection means (5) for detecting the intensity of light red out from the wavelength selection element (3); and a drive current control means (6) for increasing or decreasing the drive current of the laser light source (2) near a specified current value thereof for outputting light of the absorption wavelength, and setting the drive current at such a current value as the intensity of light detected by the optical detection means (5) has a peak value. The laser light source (2), the wavelength selection element (3), and the optical detection means (5) are mounted on a single substrate (11) which can regulate the temperature to a cons…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.