Laser apparatus and method for discriminating against higher order modes
US4779278A · kind A · utility
10Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1986 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Dec 5, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/113
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a laser apparatus and a related method for use with a laser medium of a type which emits a beam of coherent laser energy having both low and high order modes. End reflectors are provided for reflecting at least a portion of the energy in the beam back through the laser medium, and positive and negative lens elements are positioned on opposing sides of the lasing medium so that discrimination against the higher order modes is achieved by non-linearly amplifying the reflected beam portion passing through the lasing medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.