Passive optical limiter having nonlinear material
US8228584B2 · kind B2 · utility
2Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2010 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jan 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a passive optical limiter having a nonlinear material capable of switching in a predetermined optical band from a transparent state to an opaque state as a function of the power of an incident laser beam. The nonlinear material is an organic dye which comprises molecules derived from 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene into which a nitrogen atom is inserted at the meso position, referred to as aza-bodipy molecules, and which have conjugated π chains functionalized so as to exhibit absorption for two photons around an incident beam wavelength lying between 1.45 μm and 1.6 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.