Title: | Predictable Quantum Efficient Detector |
Author(s): | Sildoja, Meelis-Mait |
Date: | 2013 |
Language: | en |
Pages: | 115 |
Department: | Signaalinkäsittelyn ja akustiikan laitos Department of Signal Processing and Acoustics |
ISBN: | 978-952-60-5463-6 (electronic) 978-952-60-5462-9 (printed) |
Series: | Aalto University publication series DOCTORAL DISSERTATIONS, 199/2013 |
ISSN: | 1799-4942 (electronic) 1799-4934 (printed) 1799-4934 (ISSN-L) |
Supervising professor(s): | Ikonen, Erkki, Prof., Aalto University, Department of Signal Processing and Acoustics, Finland |
Thesis advisor(s): | Manoocheri, Farshid, Dr., Aalto University, Aalto University, Department of Signal Processing and Acoustics, Finland |
Subject: | Electrical engineering, Physics |
Keywords: | photodetectors, silicon photodiodes, metrology, radiometry, optical power measurements, absolute standards, optical standards and testing |
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Abstract:This thesis gives an overview of the Predictable Quantum Efficient Detector designed to measure optical radiation with theoretical relative uncertainty of 1 ppm (parts per million). The device is based on two custom made large area induced junction silicon photodiodes arranged in a wedged trap structure. High internal quantum efficiency (IQE) of the photodiodes is achieved by means of low doping concentration and usage of the reverse bias voltage. The IQE is predicted to be improved furthermore using low operating temperature close to 77 K. The losses due to reflected light are minimized by multiple reflections between the photodiodes. Low losses allow the PQED to work as an ideal quantum detector whose spectral responsivity is determined purely by the fundamental constants h, c, e and vacuum wavelength lambda. The remaining minor charge carrier losses are predictable using physical modelling whereas fractional reflectance losses can be measured. These properties classify the PQED as an absolute detector which does not require calibration against any other radiometric primary standard.
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Parts:[Publication 1]: M. Sildoja, F. Manoocheri, and E. Ikonen, “Reducing photodiode reflectance by Brewster-angle operation,” Metrologia, 45, 11–15, 2008.[Publication 2]: M. Sildoja, F. Manoocheri, and E. Ikonen, “Reflectance calculations for a predictable quantum efficient detector,” Metrologia, 46, S151–S154, 2009.[Publication 3]: J. Gran, T. Kübarsepp, M. Sildoja, F. Manoocheri, E. Ikonen, and I. Müller, “Simulations of a predictable quantum efficient detector with PC1D,” Metrologia, 49, S130–S134, 2012.[Publication 4]: M. Sildoja, F. Manoocheri, M. Merimaa, E. Ikonen, I. Müller, L. Werner, J. Gran, T. Kübarsepp, M. Smîd, and M. L. Rastello, “Predictable quantum efficient detector: I. Photodiodes and predicted responsivity,” Metrologia, 50, 385–394, 2013.[Publication 5]: I. Müller, U. Johannsen, U. Linke, L. Socaciu-Siebert, M. Smîd, G. Porrovecchio, M. Sildoja, F. Manoocheri, E. Ikonen, J. Gran, T. Kübarsepp, G. Brida, and L. Werner, “Predictable quantum efficient detector: II. Characterization and confirmed responsivity,” Metrologia, 50, 395–401, 2013.[Publication 6]: M. Sildoja, T. Dönsberg, H. Mäntynen, M. Merimaa, F. Manoocheri, and E. Ikonen, “Use of the predictable quantum efficient detector with light sources of uncontrolled state of polarization,” Measurement Science and Technology, accepted. |
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