%0 Conference Proceedings
%T Picosecond detection and broadband mixing of near-infrared radiation by YBaCuO films
%A Karasik, B. S.
%A Lindgren, M.
%A Zorin, M. A.
%A Danerud, M.
%A Winkler, D.
%A Trifonov, V. V.
%A Gol’tsman, G. N.
%A Gershenzon, E. M.
%Y Nahum, M.
%Y Villegier, J-C
%S Proc. SPIE
%D 1994
%V 2159
%I Spie
%F Karasik_etal1994
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1640), last updated on Wed, 26 May 2021 21:18:46 -0500
%X Nonequilibrium picosecond and bolometric responses of YBCO films 500 angstroms thick patterned into 20 X 20 micrometers [super:2] size structure to 17 ps laser pulses and modulated radiation of GaAs and CO[sub:2] lasers have been studied. The modulation frequencies up to 10 GHz for GaAs laser and up to 1 GHz for CO[sub:2] were attained. The use of small radiation power (1 - 10 mW/cm[super:2] for cw radiation and 10 - 100 nJ/cm[super:2] for pulse radiation) in combination with high sensitive read-out system made possible to avoid any non-linear transient processes caused by an overheating of sample above a critical temperature or S-N switching enhanced by an intense radiation. Responses due to the change of kinetic inductance were believed to be negligible. The only signals observed were caused by a small change of the film resistance either in the resistive state created by a bias current or in the normal state. The data obtained by means of pulse and modulation techniques are in agreement. The responsivity about 1 V/W was measured at 1 GHz modulation frequency both for 0.85 micrometers and 10.6 micrometers wavelengths. The sensitivity of high-T[sub:c] fast wideband infrared detector is discussed.
%K YBCO HTS HEB mixer
%R 10.1117/12.176131
%U https://doi.org/10.1117/12.176131
%P 68-76