Multifrequency laser oscillator for holographic contouring
US3970390A · kind A · utility
4Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Nov 4, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1062
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multifrequency laser oscillator which generates coherent light of two closely adjacent optical frequencies in rapid succession for recording contour holograms by the double exposure technique. The two light frequencies are selected by an optical intercavity frequency selector which is rotatable to a first position to select one frequency and to a second position to select the other frequency. The described laser oscillators have a ruby lasing medium and lase at the R.sub.1 and R.sub.2 transitions of the ruby resonant fluorescence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.