Laser apparatus
US4208636A · kind A · utility
23Cited by
3References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1977 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Dec 16, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/081
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An infrared laser is described which is optically pumped by a pump laser operating at a visible wavelength. The polarization of the pump, is opposite from the lasing polarization, and is coupled colinearly with the laser beam by a Brewster angle polarization beam splitter in the laser beam path which reflects the pump polarization while transmitting the lasing polarization. Leakage of the pump polarization through the beam splitter provides a visible tracer propagating colinearly with the laser beam which permits the location of the invisible infrared beam and its alignment with respect to apparatus which utilizes the beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.