Long pulse tunable light amplifier
US4829262A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1986 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Dec 8, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00452
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable dye laser has been found particularly suited to selective photothermolysis. A longer pulse duration which makes the system suitable for a wider range of applications is obtained by modifying the laser to generate a spatially noncoherent beam. The optical system at each end of the laser cell, which may include a lens or spherical mirror, refocuses the aperture of the dye cell near to itself so that substantially all light emanating from the dye cell is returned to the dye cell until the light passes through one of the optic systems as a noncoherent laser beam. A tunable intracavity element tunes the laser across the gain curve of the dye solution. The pulse duration of the laser beam can be selected from a range of durations up to about one millisecond.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.