Pulsed intracavity frequency-converted solid-state laser with long-pulse simulation
US6130900A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1999 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Mar 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/109
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an intracavity frequency-converted pulsed laser, output-pulses having a duration longer than three milliseconds are simulated by a burst of temporally spaced-apart pulses having a shorter duration, the burst duration being about equal to the duration of the pulse being simulated. In an example of the laser including a KTP crystal providing frequency-doubling and having an Nd:YAG gain-medium for providing fundamental radiation at a wavelength of 1064 nm, a thin-etalon having a thickness of about 75 micrometers is included in the laser cavity to suppress generation of laser-radiation at wavelengths of 1061 and 1074 nm. Suppression of oscillation at these wavelengths prevents damage in the KTP crystal due to abrupt intracavity power surges thereby preventing damage to the KTP crystal. Examples of intracavity-pumped optical parametric oscillators including a thin etalon and operated in a similar manner are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.