Wavelength conversion element
US5333231A · kind A · utility
16Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1992 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Apr 30, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavelength conversion element includes a substrate made of LiTaO.sub.3 of non-linear medium, a three-dimensional waveguide formed in the substrate and a second harmonic generation portion for defining a change in refractive index in the waveguide with a period .LAMBDA. and generating a second harmonic of a fundamental wave introduced into the wave guide, where .LAMBDA.=2m.pi./{.beta.(2.omega.)-2.beta.(.omega.)}, m is a natural number, .omega. is a frequency of fundamental harmonic, .beta.(.omega.) is a propagation constant of the fundamental wave, and .beta.(2.omega.) is a propagation constant of second harmonic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.