SENSITIVE PICOSECOND NBN DETECTOR FOR RADIATION FROM MILLIMETER WAVELENGTHS TO VISIBLE-LIGHT

被引:40
|
作者
GOLTSMAN, GN [1 ]
SEMENOV, AD [1 ]
GOUSEV, YP [1 ]
ZORIN, MA [1 ]
GOGIDZE, IG [1 ]
GERSHENZON, EM [1 ]
LANG, PT [1 ]
KNOTT, WJ [1 ]
RENK, KF [1 ]
机构
[1] UNIV REGENSBURG,INST ANGEW PHYS,W-8400 REGENSBURG,GERMANY
来源
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1991年 / 4卷 / 09期
关键词
D O I
10.1088/0953-2048/4/9/020
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on the application of a broad-band NbN film detector which has high sensitivity and picosecond response time for detection of radiation from millimetre wavelengths to visible light. From a study of amplitude modulated radiation of backward-wave tubes and picosecond pulses from gas and solid state lasers at wavelengths between 2 mm and 0.53-mu-m, we found a detectivity of 10(10) W-1 cm Hz-1/2 and a response time of less than 50 ps at T = 10 K. The characteristics were provided by using a 150 angstrom thick NbN film patterned into a structure of micron strips. According to the proposed detection mechanism, namely electron heating, we expect an intrinsic response time of approximately 20 ps at the same temperature.
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页码:453 / 456
页数:4
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