Subpicosecond ring laser
US4400814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | May 1, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A ring cavity laser is disclosed wherein a Rhodamine 6G dye stream is used as the gain medium, and a saturable absorber stream is positioned in the ring cavity at a point such that the time difference between pulses arriving at the gain stream is not small compared to the recovery time of the gain medium. The saturable absorber is DODCI dissolved in ethylene glycol passed through a specially constructed nozzle that creates a dye stream having a thickness of about 10 microns in the optical cavity. As a result of this thin saturable absorber, the two counterpropagating pulses that collide in the saturable absorber are caused to interact in a way that results in a decrease of the pulse duration and an equalization of the pulse intensities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.