Monolithic microchip laser with intracavity beam combining and sum frequency or difference frequency mixing
US7535937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2006 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Oct 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2302/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing low-noise laser output at various wavelengths and/or in various operation modes in a monolithic microchip laser comprises schemes of generating two fundamental beams in separate cavities, precise intracavity beam combination based on the walk-off effect in birefringent crystal, and wavelength conversion in nonlinear optical crystals. The fundamental beams are produced from light sources selected upon the desired wavelengths, polarizations, and other features related to the laser output. Low-noise laser devices operated in SLM or with spectra of flat-top or desired bandwidths are constructed according to the method. High-volume fabrication is feasible. Apparatus of compact size and efficient frequency conversion is demonstrated with various configurations including those for generating low-noise 491 nm laser, as a replacement of Argon ion laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.