Process for fabricating an optical device for generating a second harmonic optical beam
US5380410A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1994 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Feb 1, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for fabricating an SHG device by forming an inversion region having a first direction of polarization selectively in a ferroelectric substrate that has a second, opposite direction of polarization. A proton exchange process exchanges cations in the ferroelectric substrate with protons, selectively in correspondence to each portion of the substrate in which an inversion region is to be formed. Electrodes are provided on upper and lower major surfaces of the ferroelectric substrate, and the inversion region is selectively grown in a direction perpendicular to the upper major surface of the ferroelectric substrate while applying a d.c. voltage to the electrode on the upper major surface of the ferroelectric substrate thereby to induce an electric field acting in a direction coincident with the direction of said first polarization in said ferroelectric substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.