Frequency stabilized laser and method for preparing thereof
US6320888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1998 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Sep 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A frequency stabilized laser using an integrated external cavity, comprising a semiconductor laser diode and an optical waveguide installed on the same substrate, and having an optically induced grating formed in the optical waveguide suppresses mode hopping due to a temperature change to stabilize the oscillation frequencies of the laser. A material having a refractive index temperature coefficient opposite in sign to the refractive index temperature coefficient of the semiconductor laser diode is installed on that portion of the optical waveguide between the semiconductor laser diode and the optically induced grating which has been formed by removing an upper cladding and a core, or removing the upper cladding, the core, and a lower cladding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.