TY - CONF AU - Casaburi, A. AU - Ejrnaes, M. AU - Quaranta, O. AU - Gaggero, A. AU - Mattioli, F. AU - Leoni, R. AU - Voronov, B. AU - Gol'tsman, G. AU - Lisitskiy, M. AU - Esposito, E. AU - Nappi, C. AU - Cristiano, R. AU - Pagano, S. A2 - 8th European Conference on Applied Superconductivity (EUCAS 2007) PY - 2008 DA - 2008// TI - Experimental characterization of NbN nanowire optical detectors with parallel stripline configuration T2 - J. Phys.: Conf. Ser. BT - J. Phys.: Conf. Ser. SP - 012265 (1 to 6) VL - 97 PB - IOP Publishing KW - NbN SSPD KW - SNSPD AB - We have developed a novel geometrical configuration for NbN-based superconducting single photon optical detector (SSPD) that achieves two goals: a much lower intrinsic impedance, and a consequently greater bandwidth, and a much larger signal amplitude compared to the standard meandered configuration. This has been obtained by implementing a properly designed parallel stripline structure where a cascade switching mechanism occurs when one of the striplines is hit by an optical photon. The overall switching occurs synchronously and in a very short time, giving rise to a strong and fast voltage pulse. The SSPD have been realized using state of the art NbN deposition technology and e-beam lithography. The strips are 100 nm wide and 5 μm long and have been realized with 4 nm NbN film on sapphire and Si substrate. We report on experimental characterization of such novel devices. The performances of the proposed novel type of SSPD are compared with standard SSPD design and results in terms of signal amplitude, risetime and effective detection area. SN - 1742-6596 UR - https://iopscience.iop.org/article/10.1088/1742-6596/97/1/012265 UR - https://doi.org/10.1088/1742-6596/97/1/012265 DO - 10.1088/1742-6596/97/1/012265 N1 - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1416), last updated on Sat, 15 May 2021 23:04:42 -0500 ID - Casaburi_etal2008 ER -