Submillimeter wave GaAs Schottky diode application based study and optimization for 0.1–1.5 THz

Jenabi, Sarvenaz; Malekabadi, Ali; Deslandes, Dominic; Boone, F.R.; Charlebois, Serge A.

doi:10.1016/j.sse.2017.05.008

Cited by 9 publications

(3 citation statements)

References 25 publications

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“…Furthermore, a heavily doped epitaxial layer (typically >10 18 cm −3 ) is generally used to maintain a low series resistance. More thorough design and optimization guidelines can be found in [21,24]. GaAs has been the most popular choice of semiconductor for terahertz Schottky diode mixers due to its high mobility, large bandgap energy, and mature fabrication processes [25].…”

Section: Schottky Diode Mixersmentioning

confidence: 99%

Heterodyne terahertz detection through electronic and optoelectronic mixers

Lin

Jarrahi

2020

Rep. Prog. Phys.

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The high sensitivity detection of terahertz radiation is crucial for many chemical sensing, biomedical imaging, security screening, nondestructive quality control, high-data-rate communication, atmospheric, and astrophysics sensing applications. Among various terahertz detection techniques, heterodyne detection is of great interest for applications that require high spectral resolution. Heterodyne detection involves mixing the received terahertz radiation with a reference terahertz signal provided by a local oscillator and then down-converting it to an intermediate frequency for detection. The frequency of the intermediate frequency signal is usually chosen to be in the radio frequency regime, so that it can be accurately analyzed by well-developed radio frequency electronics, including ampli ers, lters, and spectrometers, for further processing. Heterodyne terahertz detection offers two major advantages over direct terahertz detection. First, the detected terahertz radiation is effectively enhanced by the reference local oscillator signal through the mixing process, thereby enabling the detection of very weak terahertz signals. Second, the detected noise power is effectively reduced by limiting the detected spectral bandwidth to the bandwidth of the intermediate frequency electronics. In this article, we present a broad overview of various types of heterodyne terahertz receivers, which utilize different electronic and optoelectronic techniques to down-convert the received terahertz signal to a radio frequency signal. We describe how the inherent nonlinearity of a Schottky diode, superconductor-insulator-superconductor junction, hot electron bolometer, and eld-effect transistor can be utilized to mix the received terahertz radiation with a reference local oscillator signal from a gas laser, quantum cascade laser, photomixer, Gunn diode, IMPATT diode, and frequency multiplier and then down-convert it to a radio frequency signal. The down-converted radio frequency signal can be subsequently detected and analyzed by various backend spectrometers, including lter bank, acousto-optical, autocorrelator, fast Fourier transform, and chirp transform spectrometers. We also discuss how a photomixer pumped by a heterodyning optical beam can be used to down-convert the received terahertz radiation to a radio frequency signal with far fewer bandwidth constraints than conventional techniques. The advantages and disadvantages of different heterodyne receivers in terms of their noise performance, operation frequency, operation bandwidth, and operation temperature are discussed in detail.

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Section: Schottky Diode Mixersmentioning

confidence: 99%

Heterodyne terahertz detection through electronic and optoelectronic mixers

Lin

Jarrahi

2020

Rep. Prog. Phys.

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“…Advances and promises in the development of the terahertz power sources over the last two decades [1]- [3], as well as emerging commercial applications, have led to the increased efforts in the development of circuits and systems for use at the submillimeter wave (low-terahertz) frequencies. Components, including antennas [4]- [6], waveguides [6]- [8], filters [9], [10], diodes and transistors [11]- [13], and photonic devices [14]- [16], are being customized for use in this spectral region. Schottky diodes, used in mixers, multipliers, phase shifters, and detectors, have to be designed using approaches aimed at reducing the capacitances, in efforts to extend the frequencies of operation up to 1.5 THz [11].…”

Section: Introductionmentioning

confidence: 99%

“…Components, including antennas [4]- [6], waveguides [6]- [8], filters [9], [10], diodes and transistors [11]- [13], and photonic devices [14]- [16], are being customized for use in this spectral region. Schottky diodes, used in mixers, multipliers, phase shifters, and detectors, have to be designed using approaches aimed at reducing the capacitances, in efforts to extend the frequencies of operation up to 1.5 THz [11]. Likewise, graphene-channel field-effect transistors are being developed, which can, with a careful design, help increase the cutoff frequencies to the terahertz range [12].…”

Section: Introductionmentioning

confidence: 99%

Design methodology for graphene tunable filters at the sub-millimeter-wave frequencies

Ilić

Bukvic

Budimir

et al. 2019

Solid-State Electronics

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Tunable components and circuits, allowing for the fast switching between the states of operation, are among the basic building blocks for future communications and other emerging applications. Based on the previous thorough study of graphene based resonators, the design methodology for graphene tunable filters has been devised, outlined, as well as explained through an example of the fifth order filter. The desired filtering responses can be achieved with the material loss not higher than the loss corresponding to the previously studied single resonators, depending mostly on the quantity of graphene per resonator. The proposed design method relies on the detailed design space mapping; obtained data gives an immediate assessment of the feasibility of specifications with a particular filter order, maximal passband ripple level, desired bandwidth, and acceptable losses. The design process could be further automated by the knowledge based approach using the collected design space data.

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Terahertz Spectrum in Biomedical Engineering

Koul

Kaurav

2022

Sub-Terahertz Sensing Technology for Biomedical Applications

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Submillimeter wave GaAs Schottky diode application based study and optimization for 0.1–1.5 THz

Cited by 9 publications

References 25 publications

Heterodyne terahertz detection through electronic and optoelectronic mixers

Heterodyne terahertz detection through electronic and optoelectronic mixers

Design methodology for graphene tunable filters at the sub-millimeter-wave frequencies

Terahertz Spectrum in Biomedical Engineering

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