Radiation detector
US9891112B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2016 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Oct 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radiation detector and method and computer program product for detecting radiation. The detector comprises a waveguide structure, a sensing structure comprising a phase change material, an optical transmitter and optical receiver. The optical transmitter transmits an optical sensing signal for receipt at the optical receiver via the waveguide structure. The phase change material comprises a first phase state at a first temperature range and a second phase state at a second temperature range and transitions from the first phase state to the second phase state under exposure of the radiation. The sensing structure is arranged in an evanescent field area of the waveguide structure and provides for an evanescent field of the optical sensing signal a first complex refractive index in the first phase state and a second complex refractive index in the second phase state. The first complex refractive index is different from the second complex refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.