公开(公告)号：US20190341734A1

公开(公告)日：2019-11-07

申请号：US16403382

申请日：2019-05-03

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Kee-Suk HONG ,  Dong-Hoon LEE ,  Seongchong PARK ,  Jisoo HWANG

IPC: H01S3/00 ,  H01S3/067 ,  H01S3/11 ,  G06N10/00

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.