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首页> 外文会议>Conference on Terahertz Physics, Devices, and Systems >A 1.5 THz hot electron bolometer receiver for ground-based Terahertz astronomy in Northern Chile
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A 1.5 THz hot electron bolometer receiver for ground-based Terahertz astronomy in Northern Chile

机译：1.5 THz热电子钻头接收器，用于智利北部地面太赫兹天文学

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摘要

A 1.5 THz superconducting receiver has been in operation at the Receiver Lab Telescope of the Smithsonian Astrophysical Observatory in Northern Chile since December 2004. This receiver incorporates a Hot Electron Bolometer (HEB) mixer chip made from a thin film of Niobium Titanium Nitride (NbTiN), which is mounted in a precision-machined waveguide mixer block attached to a corrugated waveguide horn assembly. With a noise temperature of around 1500 K, this receiver is sensitive enough for use in the pioneering field of ground-based terahertz spectral-line astronomy. A number of innovative techniques have been employed in the construction and deployment of this receiver. These include near-field vector beam mapping to enable accurate coupling to the telescope optics, the use of tunerless planar-diode based local oscillator unit capable of generating a few μW at 1.5 THz, and special calibration techniques required for terahertz astronomy. In this paper, we will report on the design, set-up and operation of this state-of-the-art instrument.
机译：自2004年12月，在智利北部的史密森天体物理天文台的接收器实验室的接收器实验室的接收器实验室望远镜中进行了一直在运行。该接收器采用了由氮化铌（NBTIN）的薄膜制成的热电子钻头（HEB）搅拌机芯片，安装在连接到波纹波导喇叭组件上的精密加工的波导混合器块中。噪声温度约为1500 k，该接收器足够敏感，以便在基于地面太赫兹光谱线天文学的开创性领域中使用。该接收器的建设和部署已经采用了许多创新技术。这些包括近场矢量梁映射，以实现与望远镜光学器件的准确耦合，使用基于无直方体的平面二极管的本地振荡器单元，其能够以1.5至16Th产生几μW，以及太赫兹天文学所需的特殊校准技术。在本文中，我们将报告这种最先进的仪器的设计，设置和运营。

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