Predictable Quantum Efficient Detector (PQED) measures optical power with a very low relative standard uncertainty of 0.008% in the spectral range of 400-800 nm, and yet it is operated at room temperature!
The PQED-RT has features of
– BNC connectors for bias voltage and output signal for two photodiodes
– adjustable Brewster window for normal operation with collimated p-polarized light
– gas valves for flow of particle-free scientific grade nitrogen through the instrument when operated without window
Further information via email to info@fitecom.com
The PQED concept is developed jointly by the Centre for Metrology and Accreditation (MIKES) and Aalto University within the project www.quantumcandela.net of the European Metrology Research Program. Background information is presented in publications
T. Dönsberg, M. Sildoja, F. Manoocheri, M. Merimaa, L. Petroff and E. Ikonen, A primary standard of optical power based on induced-junction silicon photodiodes operated at room temperature, Metrologia 51, 197-202 (2014)
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, Meas. Sci. Technol. 25, 015203 (2014)
M. Sildoja et al, Predictable Quantum Efficient Detector: I. Photodiodes and Predicted Responsivity, Metrologia 50, 385–394 (2013)
I. Müller et al, Predictable Quantum Efficient Detector: II. Characterization and Confirmed Responsivity, Metrologia 50, 395–401 (2013)
J. Gran et al, Simulations of Predictable Quantum Efficient Detector with PC1D, Metrologia 49, S130 (2012)