Wavelength-scanning calibration of detection efficiency of single photon detectors by direct comparison with a photodiode. (1st April 2016)

• Record Type: Journal Article
• Authors: Lee, Hee Jung; Park, Seongchong; Park, Hee Su; Hong, Kee Suk; Lee, Dong-Hoon; Kim, Heonoh; Cha, Myoungsik; Moon, Han Seb
• Is Part Of: Metrologia. Volume 53:Number 2(2016:Apr.)
• Page Start: 908
• Page End: 917
• Publication Date: 2016-04-01
• Subjects: single photon detector -- detection efficiency -- broadband luminescence from GaN diode laser; Weights and measures -- Periodicals; Weights and Measures -- Periodicals; 530.805
• DOI: 10.1088/0026-1394/53/2/908
• Languages: English
• ISSNs: 0026-1394

Abstract

Abstract: We present a practical calibration method of the detection efficiency (DE) of single photon detectors (SPDs) in a wide wavelength range from 480 nm to 840 nm. The setup consists of a GaN laser diode emitting a broadband luminescence, a tunable bandpass filter, a beam splitter, and a switched integrating amplifier which can measure the photocurrent down to the 100 fA level. The SPD under test with a fibre-coupled beam input is directly compared with a reference photodiode without using any calibrated attenuator. The relative standard uncertainty of the DE of the SPD is evaluated to be from 0.8% to 2.2% varying with wavelength ( k = 1).