Terahertz Response of NbN-based Microwave Kinetic Inductance Detector with Rewound Spiral Resonator
Terahertz Response of NbN-based Microwave Kinetic Inductance Detector with Rewound Spiral Resonator
复制标题
带有重绕螺旋谐振器的 NbN 微波动感电感探测器的太赫兹响应
DOI：
10.1088/0953-2048/29/3/035012
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发表时间：
2016
影响因子：
3.6
通讯作者：
S. Tanaka
中科院分区：
文献类型：
--
作者：
S. Ariyoshi;K. Nakajima;A. Saito;T. Taino;C. Otani;H. Yamada;S. Ohshima;J. Bae;S. Tanaka
我们开发了用于太赫兹成像的微波动感探测器(MKID)，它由金属氮化物超导体制成的两用回绕螺线(螺旋-MKID)组成。制作了一种基于NbN的25像素螺旋MKID阵列，并在常规4He制冷机(≃3K)的平衡温度下对THZ传感器的基本性能进行了评估。该阵列的微波传输特性表明，在2.70-2.95 GHz的微波范围内，有25条频率相等的共振线。为了评价其作为太赫兹探测器的光学性能，我们测量了螺旋MKID的光谱响应、响应时间和噪声等效功率，证实了它在1~9μ范围内有较宽的光谱响应，有效响应时间约为80 THZ。估算的噪声等效功率为
We have developed microwave kinetic inductance detectors (MKIDs) consisting of dual-purpose rewound spirals (spiral-MKIDs) made of a metal nitride superconductor for terahertz imaging applications. An NbN-based spiral-MKID array with 25 pixels was fabricated, and the fundamental performance of the terahertz receptivity was evaluated at the equilibrium temperature of a conventional 4 He refrigerator (≃ 3 K). The microwave transmission property of the array showed the 25 resonance lines, equally separated by frequency, in the microwave range from 2.70 to 2.95 GHz. To evaluate its optical performance as a terahertz detector, we measured the spiral-MKID's spectral response, response time, and noise equivalent power (NEP), and confirmed that it revealed a broad spectral response from 1 to 9 THz and an effective response time of approximately 80 μs. The noise-equivalent power was estimated to be