2022年6月1日 · Superconducting hot electron bolometer (HEB) mixers are the most sensitive heterodyne detectors at frequencies beyond 1 THz, and are used for many astronomical observations.

We analyze the pathways for achieving the THz hot-electron bolometer (HEB) mixers using high-TC superconductors. Requirements to the material in order to obtain

太赫兹(THz)波是频率在0. 1~10 THz范围内的电磁波,具有高频、高带宽、高穿透性、高度空间和时间分辨率等特点。 太赫兹技术被美国评为“改变未来世界的十大技术”之一 ,在通信、探测 、成像和谱线识别研究等领域具有重要应用潜力。 常规低频段混频器基于波导工艺,受到机械加工工艺限制,难以工作在太赫兹波段,随着微电子工艺发展,微加工精度不断提升,为混频器频率提升提供技术手段。 作为高灵敏度接收器的关键技术之一,太赫兹混频器技术成为产业界关注. 的焦点。 太赫兹 …

2014年12月4日 · In this paper, the performance of a twin-slot antenna coupled NbN superconducting HEB mixer based on a new device fabrication process is thoroughly investigated. The measured lowest double-sideband receiver noise temperature is about 600 K at 1.3 THz, and reduced to 300 K after eliminating all the quasi-optical losses.

厚度的高质量的超导NbN 薄膜. 高阻硅材料对THz 信号的衰减很小, 我们用太赫兹时域光谱(THz-TDS) 系统检测了0.3 mm厚度的高阻硅� � , THz 信号的透过率达到80%. 薄膜生长前, 用高能氩离子清洗Si 衬底, 以去除表面

2017年8月1日 · Terahertz (THz) direct detectors based on superconducting niobium nitride (NbN) hot electron bolometers (HEBs) with microwave (MW) biasing are studied. The MW is used to bias the HEB to the optimum point and to readout the …

2011年3月3日 · The design uses a novel layout for the HEB mixer employing supporting Π-frame and combines several key technologies: all-metal THz waveguide micromachining, ultra-thin NbN deposition and a micromachining of silicon-on-insulator (SOI) substrate to …

2018年4月20日 · The achieved performance sets a new benchmark for future THz instruments and emphasizes the technological readiness of waveguide-based NbN HEB mixers employing a GaN buffer-layer featuring significantly improved IF bandwidth without compromising on the receiver's noise temperature.

Abstract— We report on a 4.7 THz heterodyne receiver designed for high resolution spectroscopy of the astronomically important neutral oxygen (OI) line at 4.745 THz. The receiver is based around a hot electron bolometer (HEB) mixer and quantum cascade laser (QCL) local oscillator.

我公司提供工作在太赫兹频率范围的超快超导热电子测辐射（HEB）混频接收机和超导HEB探测器。 应用频率覆盖0.3到70 THz， 超导HEB热电子辐射探测器旨在检测和记录0.3 THz至70 THz频率范围内的电磁辐射脉冲。