Wavelength conversion element
US7177070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Nov 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/063
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Two grooves 10 are diced in parallel along the light passage direction in a quartz quasi-phase matching element 1. Consequently, as is shown in (b) and (c), a protruding part 11 which is positioned between the two grooves 10 is formed on the upper surface side (in the figures), and a ridge type waveguide 9 is formed inside this protruding part. Accordingly, if light is caused to pass through this ridge type waveguide 9, the light can be caused to pass through the portions with inverted crystal axes (polarization inversion regions) 4, and can be subjected to a wavelength conversion, in a state in which the light is confined into the ridge type wavelength guide 9. As a result, a state can be produced in which the energy of the light is high inside the wavelength conversion region, so that a high wavelength conversion efficiency can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.