Method and means for controlling population inversion and electronically scanning solid state laser output deflections
US3992681A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1973 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Aug 1, 1993 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for controlling the population inversion in a solid state laser material by optically pumping the material with a laser beam having a wavelength corresponding to the absorption band of the laser material and the output of which is spatially and temporally modulated. Spatial and temporal modulations of the population inversion in the pumped material are achieved by means of a two-dimensional spatial modulator positioned between the pump laser beam and the pumped laser material, the modulation being thermo-optically controlled by a scanning electron or laser beam or electro-optically controlled by a scanning electron beam or acousto-optically controlled by a two-dimensional acousto-optical modulator. Utilization of a lens between the spatial modulator and the optical cavity of the laser material permits electronic deflection of the output from said laser material by focusing the beam transmitted through said spatial modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.