Demonstration of Ultrasensitive KIDs for Future THz Space Borne Polarimeters

IF 3.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-01 DOI:10.1109/TTHZ.2025.3566218

Stephen J. C. Yates;Alejandro Pascual Laguna;Willem Jellema;Edgar Castillo-Dominguez;Lorenza Ferrari;Bram Lap;Vignesh Murugesan;Jose R. G. Silva;David Thoen;Ian Veenendaal;Jochem J. A. Baselmans

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引用次数: 0

Abstract

We present measurements and simulations of the polarization purity of leaky lens-antenna coupled microwave kinetic inductance detectors (KIDs) at 1.5 THz. From polarized phase and amplitude beam pattern measurements we find the integrated cross-polarization ratio to be at –21.5 dB for 1 f#

$\lambda$

spatial sampling. The measurements agree well with the theoretical description which is based on a combination of in-transmission simulation of the antenna feed, and an in-reception analysis of the antenna-KID system. A neutral density filter limited the power per detector to around 500 fW, enabling these measurements to be taken on detectors that in a low background have a measured noise equivalent power of 5–7

$\times 10^{-20}$

$/\sqrt{\text{Hz}}$

. These combined measurements show that these detectors are excellent candidates for large scale and high-performance imaging polarimetric instruments.

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用于未来太赫兹空间偏振计的超灵敏KIDs演示

本文对漏透镜-天线耦合微波动力学电感探测器（KIDs）在1.5太赫兹的偏振纯度进行了测量和模拟。从极化相位和振幅波束方向图测量中，我们发现1 f＃ $\lambda$空间采样的积分交叉极化比为-21.5 dB。测量结果与理论描述一致，理论描述是基于天线馈电的发射仿真和天线- kid系统的接收分析相结合的结果。中性密度滤波器将每个探测器的功率限制在500 fW左右，使这些测量能够在低背景下测量噪声等效功率为5-7 $\times 10^{-20}$ W $/\sqrt{\text{Hz}}$的探测器上进行。这些综合测量表明，这些探测器是大规模和高性能成像偏振仪器的优秀候选者。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Terahertz Science and Technology ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

7.10

自引率

9.40%

发文量

102

期刊介绍： IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.