Pump laser diode with improved wavelength stability
US6819702B2 · kind B2 · utility
23Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Sep 11, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/146
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pump laser diode for providing improved stability at various operating temperatures is disclosed. It includes a Fabry-Perot cavity formed by laser facets. Bragg Gratings or Fiber Bragg Gratings (FBG) in a pump module are provided, wherein the optical mirror losses are made to increase for wavelengths longer than the required emission wavelength, thus permitting the diode to be locked to an emission wavelength while operating at different temperatures. A stack of materials with different refractive indices is deposited on the back facet of the laser diode to achieve a change in optical mirror losses over longer wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.