Optical response of a cold-electron bolometer array

Tarasov, M.; Kuzmin, Leonid; Édelman, V. S.; Kaurova, N.; Fominskii, M. Yu.; Ermakov, A. N.

doi:10.1134/s0021364010180116

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…Dimensions of elements are the following: area of tunnel junctions -0.25 m 2 , length, width and thickness of normal Parallel connection of detectors for microwave signal creates a load impedance of 60  at the antenna terminal. Tunnel junction parameters were similar to those reported in [7] [8]. When cooling down to T<0.1 K the resistance ratio R d(V=0) /R n (where R d =dV/dI, R n -asymptotic normal resistance) approached R d /R n = 15000, and total resistance of array at 0.1 K approached R d(V=0) = 400 M.…”

Section: Bolometer and Radiation Sourcesupporting

confidence: 82%

“…In our earlier experiments [7] [8] [15] we observed voltage response δV(I)=V I,P=0 -V I,P , which indicates a nonequilibrium distribution in electron system. Here we have performed detailed analysis of new experimental data on IV curves, dynamic resistance, optical response to show absence of equilibrium in electron system and significant tunneling current due to electrons with excess energy.…”

Section: Introductionmentioning

confidence: 90%

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Quantum Efficiency of Cold Electron Bolometer Optical Response

Tarasov

Édelman

Ermakov

et al. 2014

IEEE Trans. THz Sci. Technol.

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In this paper we present the measurements of optical response dependence on power load of a Cold Electron Bolometer integrated in a twin slot antenna. These measurements are also compared to the models of the bolometer limit and the photon counter limit. The responsivity of 0.22*10 9 V/W was measured at 0.22 pW radiation power from a black body at 3.5 K. According to our estimations, for optimized device the voltage responsivity at 100 mK electron temperature can approach S v =10 10 V/W for power load below 0.1 pW and decreases down to 10 7 V/W at 300 mK for 5 pW signal power in a sample with absorber volume of 5*10 -20 m 3 . In the case of low bath temperatures and high applied RF power the changes of tunneling current, dynamic resistance and voltage response are explained by non-thermal energy distribution of excited electrons. Distribution of excited electrons in such system at lower temperatures can be of non-Fermi type, hot electrons with energies of the order of 1 K tunnel from normal metal absorber to superconductor instead of relaxing down to thermal energy kT e in absorber before tunneling. This effect can reduce quantum efficiency of the bolometer at 350 GHz from =hf/kT ph >100 in ideal case down to single electron per absorbed photon (=1) in the high power case. Methods of preserving high quantum efficiency are discussed.

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Section: Bolometer and Radiation Sourcesupporting

confidence: 82%

Section: Introductionmentioning

confidence: 90%

Quantum Efficiency of Cold Electron Bolometer Optical Response

Tarasov

Édelman

Ermakov

et al. 2014

IEEE Trans. THz Sci. Technol.

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“…The fabrication process is similar to the one described in [18]. The pixel is fabricated using multiple lithography layers.…”

Section: Fabricationmentioning

confidence: 99%

A Frequency Selective Surface Based Focal Plane Receiver for the OLIMPO Balloon-Borne Telescope

Mahashabde

Соболев

Bengtsson

et al. 2015

IEEE Trans. THz Sci. Technol.

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We describe here a focal plane array of Cold-Electron Bolometer (CEB) detectors integrated in a frequency selective surface (FSS) for the 350 GHz detection band of the OLIMPO balloon-borne telescope. In our architecture, the two-terminal CEB has been integrated in the periodic unit cell of the FSS structure and is impedance matched to the embedding impedance seen by it and provides a resonant interaction with the incident submillimeter radiation. The detector array has been designed to operate in background noise limited condition for incident powers of 20 pW to 80 pW, making it possible to use the same pixel in both photometric and spectrometric configurations. We present high-frequency and dc simulations of our system, together with fabrication details. The frequency response of the FSS array, optical response measurements with hot/cold load in front of optical window, and with variable-temperature blackbody source inside cryostat are presented. A comparison of the optical response to the CEB model and estimations of noise equivalent power (NEP) is also presented. Index Terms-Cold-electron bolometer (CEB), frequency selective surface (FSS), OLIMPO.A. Sobolev is with the Kotel'nikov Institute of Radio Engineering and Electronics, Moscow, Russia, and also with the Moscow Institute of Physics and Technology (State University), Moscow, Russia. M. A. Tarasov is with the Chalmers University of Technology, Göteborg, Sweden, and also with the Kotel'nikov Institute of Radio Engineering and Electronics, Moscow, Russia.M. Salatino, S. Masi, and P. de Bernardis are with

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“…Soliton solutions of the FK model correspond to magnetic flux quanta that represent data bits in the circuits. In addition, a number of devices on the basis of superconducting circuits for field and current sensors [10,11] and readout systems for applications in optical communications, quantum cryptography, quantum-optical studies, and radio astronomy [12][13][14][15][16] have been proposed and tested.Digital technology requires the synchronization of events that correspond to operations with data bits. Since physical…”

mentioning

confidence: 99%

Effect of Cherenkov radiation on the jitter of solitons in the driven underdamped Frenkel-Kontorova model

et al. 2013

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The effect of complex dynamics of solitons on the output noise of the system (thermal jitter) is studied in the frame of the driven underdamped Frenkel-Kontorova model. In contrast to the continuous case, we have observed a dramatic splash of the jitter. It is demonstrated that this jitter increase is related to the joining of an initial soliton with the one generated by large amplitude oscillations of the Cherenkov radiation tail, which results in the establishment of a unified soliton structure. In recent years the problem of energy dissipated by digital circuits became of importance for further progress in digital technology. The currently demonstrated specific energy dissipation per elementary operation is of the order of 10 6 kT , where k is the Boltzmann constant and T is the temperature. However, the thermodynamic threshold per logic operation, known as the Landauer limit, is equal to kT ln 2 [1,2]. To achieve this limit it is necessary to minimize the losses during information processing. A possible approach here is the use of low loss motion of solitary waves for data bit transfer and reversible computation schematics for logic operations.A broad variety of applications in physics, chemistry, and biology (see [3,4]) is described by the discrete FrenkelKontorova (FK) model or its continuous analog-the sineGordon (SG) equation. A couple of examples of modern devices used for information processing described by the FK model are as follows. In magnetic domain wall racetrack memory [5], the magnetic domains in nanowires representing data bits can be considered as solitons in the FK model. This device combines the low cost of hard disk drives and the high performance and reliability of solid-state memory. Another example is superconducting electronic devices based on Josephson junctions. Recently it has been experimentally demonstrated that reversible superconductor digital circuits based on underdamped Josephson junctions can operate with extremely low energy dissipation about or even below the Landauer limit [6][7][8][9]. Soliton solutions of the FK model correspond to magnetic flux quanta that represent data bits in the circuits. In addition, a number of devices on the basis of superconducting circuits for field and current sensors [10,11] and readout systems for applications in optical communications, quantum cryptography, quantum-optical studies, and radio astronomy [12][13][14][15][16] have been proposed and tested.Digital technology requires the synchronization of events that correspond to operations with data bits. Since physical

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Optical response of a cold-electron bolometer array

Cited by 10 publications

References 12 publications

Quantum Efficiency of Cold Electron Bolometer Optical Response

Quantum Efficiency of Cold Electron Bolometer Optical Response

A Frequency Selective Surface Based Focal Plane Receiver for the OLIMPO Balloon-Borne Telescope

Effect of Cherenkov radiation on the jitter of solitons in the driven underdamped Frenkel-Kontorova model

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