Open AccessDemonstration of a dual-mode Si detector as a self-calibrating device at room temperature
Author(s) -
Marit Ulset Nordsveen,
Chi Kwong Tang,
Jarle Gran
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.008459
Subject(s) - photodiode , detector , optics , photocurrent , materials science , radiometer , optoelectronics , thermal , optical power , quantum efficiency , silicon , photon , photon counting , physics , laser , meteorology
We demonstrate the use of a dual-mode detector for determining the internal quantum deficiency of a silicon photodiode without the use of an external reference. This is achieved by combining two different principles for measuring optical power in one device, where the photodiode is used as absorber for both thermal and photon detection. Thermal detection is obtained by the same principle as for an electrical substitution radiometer (ESR), with a type A measurement uncertainty of 0.34 % in unstabilized room temperature. The optical power measured in thermal mode was around 3 % ± 0.5 % higher than what was measured in photocurrent mode. Heat transfer simulations revealed a difference of up to 2.2 % between optical and electrical heating, and based on these simulations we give recommendations for improvements of the detector thermal design.