Bragg mirror optimized for shear waves
US7684109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2007 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | May 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an embodiment, set forth by way of example and not limitation, a Bragg mirror includes a first bi-layer of a first thickness and a second bi-layer of a second thickness which is different from the first thickness. In this exemplary embodiment, the first bi-layer consists essentially of a first high impedance layer and a first low impedance layer, and the second bi-layer of a second thickness which is different from the first thickness, the second bi-layer consisting essentially of a second high impedance layer and a second low impedance layer. Preferably, the first bi-layer is configured to substantially reflect a first wavelength and the second bi-layer is configured to substantially reflect a second wavelength different from the first wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.