Power meter for high energy lasers
US4381148A · kind A · utility
21Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1981 |
| Grant date | Apr 26, 1983 |
| Priority date | — |
| Expiry date | Mar 23, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A power meter for non-destructively measuring the power of a high energy er beam. The power meter includes a cell disposed in the flow path of a gas containing a laser radiation-absorbing species. The absorption coefficient of the absorbing species is small enough to allow the beam to pass through the cell essentially unaltered. The concentration of the absorbing species is modulated to modulate its absorption of the laser beam power and produce acoustic waves in the gas which can be detected and measured to give an absolute measurement of the power in the high energy laser beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.