External frequency conversion of surface-emitting diode lasers
US6680956B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Methods and devices are provided for converting a fundamental wavelength of a fundamental beam generated by a surface-emitting diode laser having a first resonating cavity. According to some embodiments, a first nonlinear crystal disposed in a second resonating cavity external to first resonating cavity converts the fundamental beam to a first output beam having a first output wavelength different from the fundamental wavelength. Some embodiments include a second nonlinear crystal, which may be disposed in the second resonating cavity or in a third resonating cavity, for producing a second output beam having a second output wavelength different from the first output wavelength. In some such embodiments, the second nonlinear crystal converts the wavelength of the first output beam to produce the second output beam. In some embodiments, the second nonlinear crystal interacts with the first output beam and an infrared beam from another laser device to produce the second output beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.