Resonant photo acoustic system
US9243998B2 · kind B2 · utility
6Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2012 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Aug 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/1708
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device includes a resonator having an oscillating portion with dimensions chosen to lead to a desired resonant frequency. A light source is positioned to provide light along the length of the oscillating portion at a specific wave length. A detector detects a change in oscillation of the resonator responsive to the wave pressure produced by the light source heating a gas. The light source is modulated with a frequency the same as the resonant frequency of the resonator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.