Optical wavelength converting device
US5517525A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 1995 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Mar 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/141
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical wavelength converting device comprises; a semiconductor laser emitting a fundamental wave; a waveguide-type optical wavelength converting element having a core made of a nonlinear optical material and a clad surrounding the core; and a converging optical system for converging the fundamental wave onto an input end of the waveguide, characterized in that the device further comprises; an adjusting optical system for adjusting a quantity of backward light backed from the optical wavelength converting element to the semiconductor disposed in the coupling optical system; a reflecting portion for reflecting the fundamental wave disposed in the an optical wavelength converting element or the coupling optical system; a current controller for changing an electric current to be supplied to the semiconductor laser; and an optical-path-length stabilizing device comprising a supporting plate for supporting the semiconductor laser, the coupling optical system and the an optical wavelength converting element to keep constant an optical path length between the semiconductor laser and the reflecting portion; and a temperature tuner for changing temperature of at least one of the supporti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.