论文标题
毫米波检测的热动力电感探测器
Thermal Kinetic Inductance Detectors for millimeter-wave detection
论文作者
论文摘要
热动力电感探测器（TKID）结合了传统验证仪的出色噪声性能与射频多路复用体系结构，可实现下一代毫米波仪器所需的大量检测器计数。在本文中，我们首先讨论了TKID中的预期噪声源，并得出了声子噪声贡献在其他检测器噪声术语中主导的限制：生成重组，放大器和两级系统（TLS）噪声。其次，我们在黑暗的环境中表征了铝制TKID。我们介绍了TKID谐振器的测量值约为$ 10^5 $ 80 mk。我们还讨论了钢计导电，热容量和时间常数。这些是通过在热岛上使用电阻来激发强仪的测量。 These dark aluminum TKIDs demonstrate a noise equivalent power NEP = $2 \times 10^{-17} \mathrm{W}/\mathrm{\sqrt{Hz}} $, with a $1/f$ knee at 0.1 Hz, which provides background noise limited performance for ground-based telescopes observing at 150 GHz.
Thermal Kinetic Inductance Detectors (TKIDs) combine the excellent noise performance of traditional bolometers with a radio frequency multiplexing architecture that enables the large detector counts needed for the next generation of millimeter-wave instruments. In this paper, we first discuss the expected noise sources in TKIDs and derive the limits where the phonon noise contribution dominates over the other detector noise terms: generation-recombination, amplifier, and two-level system (TLS) noise. Second, we characterize aluminum TKIDs in a dark environment. We present measurements of TKID resonators with quality factors of about $10^5$ at 80 mK. We also discuss the bolometer thermal conductance, heat capacity, and time constants. These were measured by the use of a resistor on the thermal island to excite the bolometers. These dark aluminum TKIDs demonstrate a noise equivalent power NEP = $2 \times 10^{-17} \mathrm{W}/\mathrm{\sqrt{Hz}} $, with a $1/f$ knee at 0.1 Hz, which provides background noise limited performance for ground-based telescopes observing at 150 GHz.
