Multifunctional optical filters
US11630371B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2021 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Dec 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3503
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical filter includes a substrate; a first mirror on the substrate; a cavity layer on the first mirror; and a second mirror on the cavity layer. Each of the first and second mirrors provide high reflection, low transmission and low absorption over a targeted stopband. The cavity layer defines a resonant transmission band within the targeted stopband with the resonant band wavelength depending on the optical thickness of the cavity layer. The cavity layer includes a material having a non-linear response to incident irradiance such that cavity absorption changes with irradiance and suppresses cavity resonance at high irradiance. The material having the non-linear response to the incident irradiance includes a two-dimensional (2D) material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.