Laser with high quality, stable output beam, and long life high conversion efficiency non-linear crystal
US8873596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2012 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Dec 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mode-locked laser system operable at low temperature can include an annealed, frequency-conversion crystal and a housing to maintain an annealed condition of the crystal during standard operation at the low temperature. In one embodiment, the crystal can have an increased length. First beam shaping optics can be configured to focus a beam from a light source to an elliptical cross section at a beam waist located in or proximate to the crystal. A harmonic separation block can divide an output from the crystal into beams of different frequencies separated in space. In one embodiment, the mode-locked laser system can further include second beam shaping optics configured to convert an elliptical cross section of the desired frequency beam into a beam with a desired aspect ratio, such as a circular cross section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.