Tunable anti-Stokes Raman laser
US4486884A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | May 10, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An anti-Stokes Raman laser is disclosed which is tunable over a range of 10-70 cm.sup.-1. An alkali halide is used as the lasing medium and a metastable halide population inversion is created with respect to the ground state of the halide by selective photodissociation of the alkali halide. A pump laser is then employed to move the population from the metastable state to a region near an intermediate state of the halide. The population subsequently falls back to the initial ground state, thereby creating the anti-Stokes Raman emission. Since the intensity of the photodissociation is directly proportional to the amount of population inversion achieved, and hence, to the region the population may be pumped to, the tuning of the output anti-Stokes Raman lasing is a function of the intensity of the initial photodissociation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.