Results 21 to 30 of about 215 (123)
Optical response of a cold-electron bolometer array [PDF]
A multielement bolometric receiver system has been developed to measure the power and polarization of radiation at a calculated frequency of 345 GHz. Arrays of ten series-parallel connected cold-electron bolometers have been pairwise integrated into orthogonal ports of a cross-slot antenna.
M. A. Tarasov +5 more
openaire +1 more source
Optical Response of Strained- and Unstrained-Silicon Cold-Electron Bolometers [PDF]
We describe the optical characterisation of two silicon cold-electron bolometers each consisting of a small ($32 \times 14~\mathrm{μm}$) island of degenerately doped silicon with superconducting aluminium contacts. Radiation is coupled into the silicon absorber with a twin-slot antenna designed to couple to 160-GHz radiation through a silicon lens.The ...
Brien, T.L.R. +12 more
openaire +4 more sources
Observation of photon noise by cold-electron bolometers [PDF]
We have observed the photon noise by measuring a response to the black body 350 GHz radiation and noise of the cold-electron bolometers (CEBs). The experimental results have been fit to the theoretical model of CEBs with two heat-balance equations. The measured noise has been decomposed into several terms with the help of theory.
A. V. Gordeeva +6 more
openaire +2 more sources
Concept of a mixer based on a cold-electron bolometer [PDF]
A phase-sensitive terahertz heterodyne mixer of a new type based on a cold-electron bolometer is proposed. In this mixer, a normal-metal thin-film absorber is connected to a planar antenna via superconductor-insulator-normal metal (SIN) tunnel junctions, thus forming a SINIS structure. The SINIS mixer combines the advantages of a hot-electron bolometer
M. Tarasov, L. Kuz’min
openaire +1 more source
The response of the Cold-Electron Bolometers (CEBs), integrated into a 2-D array of dipole antennas, has been measured by irradiation from YBa2Cu3O7−δ (YBCO) 50 μm long Josephson junction into the THz region at frequencies from 0.1 to 0.8 THz.
Leonid Revin +6 more
doaj +1 more source
A strained silicon cold electron bolometer using Schottky contacts [PDF]
We describe optical characterisation of a strained silicon cold electron bolometer (CEB), operating on a 350 mK stage, designed for absorption of millimetre-wave radiation. The silicon cold electron bolometer utilises Schottky contacts between a superconductor and an n++ doped silicon island to detect changes in the temperature of the charge carriers ...
Brian, T. L. R. +12 more
openaire +4 more sources
A distributed-absorber cold-electron bolometer single pixel at 95 GHz [PDF]
We describe a Frequency Selective Surface (FSS) based distributed-absorber Cold-Electron Bolometer (CEB) pixel at 95 GHz integrated in a multi-moded horn. The FSS provides a resonant interaction with incident mm and sub-mm radiation and defines the bandwidth of the array while the horn provides the matching of the beam to the telescope optics.
Mahashabde S. +6 more
openaire +2 more sources
This study explores plasmonic photodetection using graphene, achieving non‐scattering near‐field detection of surface plasmon polaritons. The maximum photoresponsivity is 29.2 mA W−1, and the polarization state of input light produces a 400% contrast. This has potential applications in on‐chip optoelectronic circuits.
Chia‐Hung Wu +9 more
wiley +1 more source
Measurements of the CMB properties is an actual problem of modern astronomy. The aim of the present paper is the numerical modeling of the two-frequency planar cross-slot antenna designed for operation in the receiving system of the orbital telescope ...
L. S. Kuzmin, A. V. Chiginev
doaj +1 more source
Sensitivity to Cosmic Rays of Cold Electron Bolometers for Space Applications [PDF]
An important phenomenon limiting the sensitivity of bolometric detectors for future space missions is the interaction with cosmic rays. We tested the sensitivity of Cold Electron Bolometers (CEBs) to ionizing radiation using gamma-rays from a radioactive source and X-rays from a X-ray tube. We describe the test setup and the results.
SALATINO, MARIA +4 more
openaire +3 more sources

