Journal ArticleDOI
Far-infrared microbolometer detectors
TLDR
The bismuth microbolometer is a simple, easily made detector suitable for use throughout the far-infrared, which has been integrated with a variety of planar antennas as mentioned in this paper.Abstract:
The bismuth microbolometer is a simple, easily made detector suitable for use throughout the far-infrared, which has been integrated with a variety of planar antennas. The general thermal properties of these devices and some of the constraints on bolometer materials are discussed. The fabrication and performance of several different types of microbolometers and microthermocouples are described.read more
Citations
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Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
TL;DR: In this paper, a review of the thermal properties of mesoscopic structures is presented based on the concept of electron energy distribution, and, in particular, on controlling and probing it, and an immediate application of solidstate refrigeration and thermometry is in ultrasensitive radiation detection, which is discussed in depth.
Journal ArticleDOI
Bow-tie antennas on a dielectric half-space: Theory and experiment
Richard C. Compton,Ross C. McPhedran,Zoya Popovic,Gabriel M. Rebeiz,P. Tong,David B. Rutledge +5 more
TL;DR: In this paper, the radiation pattern of a bow-tie antenna of finite length and infinitesimal thickness, placed on a lossless dielectric substrate, is analyzed based on a representation of the current density on the metal surface of the antenna as a sum of an imposed quasistatic term and a set of current modes with unknown amplitudes.
Journal ArticleDOI
Monolithic millimeter-wave two-dimensional horn imaging arrays
TL;DR: In this article, a monolithic two-dimensional horn imaging array has been fabricated for millimeter wavelengths, where a dipole is suspended in an etched pyramidal cavity on a 1- mu m silicon-oxynitride membrane.
Journal ArticleDOI
Conversion gain and noise of niobium superconducting hot-electron-mixers
TL;DR: In this paper, a detailed phenomenological theory for the determination of conversion properties is presented, which is capable of predicting the frequency-conversion loss rather accurately for arbitrary bias by examining the I-V characteristic, Knowing the electron temperature relaxation time, and using parameters derived from the I -V-characteristic also allows to predict the -3-dB IF bandwidth.
Journal ArticleDOI
Fundamentals of Terrestrial Millimeter-Wave and THz Remote Sensing
TL;DR: In this article, the authors provide a useful tutorial for graduate students or practicing engineers considering the upper millimeter-wave or THz regions for system research or development, starting with fundamental principles of electromagnetics, quantum mechanics, and signal processing, and building up to tradc-off formulations using system-level metrics such as noise-equivalent power and receiver operating characteristics.
References
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Journal ArticleDOI
Offset masks for lift‐off photoprocessing
TL;DR: In this article, a technique using photolithography to produce submicron-scale thin-film structures and simple multilevel structures by single mask lift-off processing is described.
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Radiation patterns of interfacial dipole antennas
TL;DR: In this article, the radiation pattern of an infinitesimal electric dipole was calculated for the case where the dipole is vertically located on the plane interface of two dielectric half spaces.
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The Detection and Measurement of Infrared Radiation
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Low-noise 115-GHz mixing in superconducting oxide-barrier tunnel junctions
TL;DR: In this article, a small area (≲1 μm2) oxide-barrier tunnel junctions have been made of thermally cyclable superconducting Pb alloys for use as high frequency mixers.