A far-infrared Fourier transform spectrometer with an antenna-coupled niobium bolometer

被引：10
作者：
Santavicca, D. F. [1 ]
Annunziata, A. J. [1 ]
Reese, M. O. [1 ]
Frunzio, L. [1 ]
Prober, D. E. [1 ]
机构：
[1] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2007年 / 20卷 / 11期
关键词：
D O I：
10.1088/0953-2048/20/11/S19
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have designed and constructed a custom far- infrared Fourier transform spectrometer using an antenna- coupled bolometer as a detector. The active element of the detector is a superconducting niobium microbridge, and the far- infrared signal is coupled to the microbridge via a planar antenna mounted on a hyperhemispherical silicon lens. The spectrometer uses a broadband blackbody source with frequency- independent optical components, and thus the system bandwidth is set by the detector antenna. We have fabricated devices with two different antenna types, the double dipole and the log spiral, and have characterized the spectral response of each. This spectrometer can utilize the fast response of the niobium bolometer to perform time- resolved far- infrared spectroscopy on nanosecond to millisecond timescales. These timescales are too fast for standard commercial bolometers and too long for a typical optical delay line.
引用
收藏
页码：S398 / S402
页数：5
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