Principles of THz Direct Detection

Brown, E. R.; Segovia-Vargas, D.

doi:10.1002/9781118920411.ch5

Cited by 3 publications

(4 citation statements)

References 45 publications

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“…The performance of different types of THz detectors operating at room temperature is summarised in Table 3 [5]. As we see, the spread in detector parameters is large.…”

Section: Uncooled Direct Thz Detectorsmentioning

confidence: 91%

Progress in performance development of room temperature direct terahertz detectors

Rogalski

2022

J Infrared Milli Terahz Waves

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In this paper issues, associated with the development of THz direct detectors and focal plane arrays in the last decade are discussed. After short description of general classification of THz detectors, more details concern Schottky barrier diodes, CMOS-based detectors, microbolometers, and field-effect transistor detectors, where links between THz devices and modern technologies such as micromachining are underlined. Special attention has been paid to the development of detectors made of two-dimensional materials. Their performance is comparable to that presented for classical terahertz detectors. It is shown that applications of nanoscale materials and devices, in particular, made of two-dimensional materials, open the door for further performance improvement of THz detectors operated at room temperature.

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“…The performance of different types of THz detectors operating at room temperature is summarised in Table 3 [5]. As we see, the spread in detector parameters is large.…”

Section: Uncooled Direct Thz Detectorsmentioning

confidence: 91%

Progress in performance development of room temperature direct terahertz detectors

Rogalski

2022

J Infrared Milli Terahz Waves

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“…Every frame contains 1024 pixels which are consecutively read out. 5 Assuming a flat noise spectral density, the NEP can be obtained using NEP = 12…”

Section: Quasi-optical Radiometric Systemmentioning

confidence: 99%

“…of the operational frequency band in which the antenna feeds are operating. Equating (13) with (12) gives rise to the sampling rule (14) stating that the diffraction-limited resolution Δθ lim can be reached when the sampling points in the focal plane are separated by [35] 10…”

Section: B Focal Plane Sampling and Jigglingmentioning

confidence: 99%

“…Cryogenically cooling the detectors is expensive and results in a bulky system; for the purpose of low-cost imaging applications, it is desired to have a large integrated FPA operating at room temperature. In this scenario, the electronic noise introduced by the detectors is much higher such that none of the existing uncooled direct detectors operate near the background-noise limit [12]; the current state-of-the-art uncooled passive submillimeter-wave imagers [2], [13]- [19] are insufficiently sensitive to operate without actively illuminating the source of interest.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

THz Imaging Using Uncooled Wideband Direct Detection Focal Plane Arrays

Berkel

Yurduseven

Freni

et al. 2017

IEEE Trans. THz Sci. Technol.

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Modified Soret Lenses for Dual-Band Integrated Detectors at Millimetre and Submillimetre Wavelengths

Torres-Garcia

Pérez-Escudero

Ederra

et al. 2020

IEEE Trans. THz Sci. Technol.

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This paper presents a planar silicon integrated subharmonic mixer on top of a photonic-crystal platform. The local oscillator (LO) power is injected through a 2D photoniccrystal (PC) slab to a resonant cavity that effectively couples the signal to a planar bow-tie antenna. The same antenna, which is printed on the top of the PC cavity, contains an antiparallel Schottky diode pair which performs the down-conversion. The proposed design is a simple, easy to integrate, low cost, low profile device. Moreover, the described fabrication process is compatible with active components integration. The performance of the design has been experimentally demonstrated showing good agreement with the simulation and is comparable with the stateof-the-art of planar mixers. The work presented here is based on concepts and technologies from electronics and photonics domains and may be a good starting point for the creation of new devices, allowing the integration and upgrading of existing techniques from both worlds.

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Principles of THz Direct Detection

Cited by 3 publications

References 45 publications

Progress in performance development of room temperature direct terahertz detectors

Progress in performance development of room temperature direct terahertz detectors

THz Imaging Using Uncooled Wideband Direct Detection Focal Plane Arrays

Modified Soret Lenses for Dual-Band Integrated Detectors at Millimetre and Submillimetre Wavelengths

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