Silica sol gel micro-laser on a substrate
US7769071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2004 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Oct 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Silica sol gel micro-lasers and methods of fabricating micro-lasers on a chip or a wafer. A silica sol gel micro-laser includes a silica sol gel optical micro-cavity, a substrate, and a support member or pillar that extends between the micro-cavity and the substrate. An outer surface or periphery of the micro-cavity extends beyond a top of the sol gel support member or is overhanging with respect to the underlying support member. Optical energy travels along an inner surface of the silica sol gel micro-cavity. Undoped silica sol gel micro-cavities can be used for Raman lasers. Sol gel micro-cavities can be doped with, for example, erbium, and can be used for erbium-doped micro-lasers that have ultra narrow line widths, for example, less than 100 Hz. Undoped and doped silica sol gel micro-lasers can have Q factors greater than 107.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.