Nonlinear crystal
US11347130B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2018 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Aug 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0092
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A nonlinear crystal comprising a first end face and an opposing second end face is described. The first and second end faces are separated along an optical axis of the nonlinear crystal by a length in the range of 0.25 mm and 2 mm. Although the length of the nonlinear crystal results in a reduction in the nonlinear effects induced on an optical field propagating through the crystal it also provides for reduced deviation experienced by the generated optical field when the nonlinear crystal is rotated. Therefore, when the nonlinear crystals are incorporated within an enhancement cavity their reduced length allows for the deviation of the output field to be minimised by servo control electronics arranged to adjust a single cavity mirror. This significantly reduces the complexity, and thus expensive of the servo control electronics when compared to those employed with the prior art enhancement cavities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.