Controlling absorption of light in a cavity
US9041996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Mar 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0155
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Described is a method of controlling the absorption of light in a cavity, a system in which absorption is so controlled, and an interferometer embodying the underlying physical concept. Materials can be made to completely absorb incident light when the light is imposed in a specific pattern of illumination. Coherent perfect absorption, as the process is referred to, is achieved when a cavity is illuminated coherently and monochromatically by the time-reverse of the output of a lasing mode. Varying the parameters of the incident light and/or of the cavity allows the absorption of the incident light by the cavity to be controlled; enhanced or even reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.