Quantum efficiency measuring instrument and method for photovoltaic detectors on individual laser pulses
US11435226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Jul 7, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/423
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are an apparatus and method for measuring quantum efficiency of a detector using a single pulse laser. Quantum efficiency of the measurement target detector may be measured from 420 nm to 1600 nm having uncertainty of 2% to 4% (K=2) by comparing the reference detector and the measurement target detector significantly different in sensitivity using a single laser pulse as a spectral light source. Also, it is possible to directly compare the two detectors with a significant difference in sensitivity through a very simple setup that causes a portion of a laser pulse output from a light source part to be absorbed by the reference detector and the laser pulse reflected from the reference detector to be irradiated to the measurement target detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.