- document
-
Chan, H.W. (author), Prodanovic, V. (author), Theulings, A.M.M.G. (author), Tao, S. (author), Smedley, J. (author), Hagen, C.W. (author), Sarro, Pasqualina M (author), v.d. Graaf, H. (author)In this work we demonstrate that ultra-thin (5 and 15 nm) MgO transmission dynodes with sufficient high transmission electron yield (TEY) can be constructed. These transmission dynodes act as electron amplification stages in a novel vacuum electron multiplier: the Timed Photon Counter. The ultra-thin membranes with a diameter of 30 μm are...journal article 2023
- document
-
Chan, H.W. (author), Prodanovic, V. (author), Theulings, A.M.M.G. (author), Hagen, C.W. (author), Sarro, Pasqualina M (author), v.d. Graaf, H. (author)The (secondary) electron emission from multilayered Al2O3/TiN membranes has been investigated with a hemispherical collector system in a scanning electron microscope for electrons with energies between 0.3 and 10 keV. These ultra-thin membranes are designed to function as transmission dynodes in novel vacuum electron multipliers. Two...journal article 2021
- document
-
Sun, J. (author), Zhan, Teng (author), Liu, Zewen (author), Wang, Junxi (author), Yi, Xiaoyan (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)This paper demonstrates a method to reduce the decay time in AlGaN/GaN photodetectors by a pulsed heating mode. A suspended AlGaN/GaN heterostructure photodetector integrated with a micro-heater is fabricated and characterized under ultraviolet illumination. We have observed that the course of persistent photoconductivity was effectively...journal article 2019
- document
-
Pandraud, G. (author), Milosavljevic, S. (author), Sammak, A. (author), Cherchi, Matteo (author), Jovic, A. (author), Sarro, Pasqualina M (author)In this work, we present the results of integrated Ge detectors grown on a Si photonic platform for sensing applications. The detectors are fabricated on a passive photonic circuit for maximum coupling efficiency. Measurement results at 1300 nm wavelength show a responsivity of 0.2 A/W and very low dark current levels. For a voltage range...conference paper 2017
- document
-
Kasalynas, I. (author), Adam, A.J.L. (author), Klaassen, T.O. (author), Hovenier, N.J. (author), Panraud, G. (author), Iordanov, V.P. (author), Sarro, P.M. (author)Detection peculiarities of an un-cooled (room temperature) 8×8 pixel array designed to image broadband THz radiation were investigated. Each pixel consists of a thin conductive film absorber on a dielectric membrane with thermopile temperature readout. It was designed and tested for four combinations of two different types of absorber and...conference paper 2007