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Terahertz gas sensing based on high Q onedimensional ...

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11/11/2014· We present a terahertz gas sensor based on a simple onedimensional photonic crystal cavity. Although the manufacture process is quite easy, this cavity exhibits quite high quality factors for assisting the realization of very high sensitivity in the gas refractive index sensing. Transmission measurements of the one dimensional photonic crystal cavity under different gaseous environments ...

Photonic spin Hall effect and terahertz gas sensor via ...

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30/7/2021· Photonic spin Hall effect and terahertz gas sensor via InSbsupported longrange surface plasmon resonance Jie Cheng 1 , Gaojun Wang 1 , Peng Dong 2 , Dapeng Liu 2 , …

Terahertz gas sensor based on absorptioninduced ...

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Terahertz gas sensor based on absorptioninduced transparency Author: Rodrigo, Sergio G. Christos, Argyropoulos Monti, Alessio Journal: EPJ Applied Metamaterials Issue Date: 2016 Page: 11. Related;

Terahertz gas sensor based on absorptioninduced ...

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Abstract. Read online. A system for the detection of spectral signatures of gases at the Terahertz regime is presented. The system consists in an initially opaque holey metal film whereby the introduction of a gas provokes the appearance of spectral features in transmission and reflection, due to the phenomenom of absorptioninduced transparency (AIT).

Gas sensing using terahertz timedomain spectroscopy

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Appl. Phys. B 67, 379–390 (1998) Applied Physics B Lasers and Optics SpringerVerlag 1998 Gas sensing using terahertz timedomain spectroscopy Mittleman1, ...

Terahertz wave generation from ringAiry beam induced ...

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22/1/2019· Lu X, Karpowicz N, Chen Y, Zhang X C. Systematic study of broadband terahertz gas sensor. Applied Physics Letters, 2008, 93 (26): 261106. Google Scholar 68. Zalkovskij M, Zoffmann Bisgaard C, Novitsky A, Malureanu R, Savastru D, Popescu A, Uhd Jepsen P, Lavrinenko A V. Ultrabroadband terahertz spectroscopy of chalcogenide glasses.

THz gas sensor based on onedimensional photonic crystal

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13/3/2012· We proposed a sensitive gas sensor based on one dimensional photonic crystal (1DPC) cavity in terahertz frequency range. The cavity Consists of stacks of highresistivity silicon layers and air spacers, and has a very high quality factor exceeding 1200. The defect modes are very sensitive to the small change of the refractive index of materials in the cavity. The resonant mode shifts about ...

Terahertz gas sensor based on absorptioninduced ...

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Terahertz gas sensor based on absorptioninduced transparency . By Sergio G. Rodrigo, Argyropoulos Christos and Alessio Monti. Get PDF (697 KB) Abstract. A system for the detection of spectral signatures of gases at the Terahertz regime is presented. The system …

Compact Submillimeter/Terahertz Gas Sensor With Efficient ...

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Compact Submillimeter/Terahertz Gas Sensor With Efficient Gas Collection, Preconcentration, and ppt Sensitivity

(PDF) Terahertz Wave Air Photonics: Terahertz Wave ...

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Infrared, MillimeterWave, and Terahertz Technologies III ...

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Lowfrequency vibration study of amino acids using terahertz spectroscopy and solidstate density functional theory Author(s): Feng Zhang; Keisuke Tominaga; Michitoshi Hayashi; HoungWei Wang

An Integrated Photoacoustic Terahertz Gas Sensor | IEEE ...

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6/9/2019· An Integrated Photoacoustic Terahertz Gas Sensor. Abstract: An onchip gas detector that transduces absorbed terahertz light to a mechanical motion using photoacoustics is proposed. The silicon chip confines light in an optical cavity, wherein an acoustomechanical cavity is housed. The concentration of a trace gas can be determined from the ...

SMM/THz Gas Sensors | The Microwave Laboratory

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A SMM/THz gas sensor needs a core spectrometer, such as described in Section , packaged with a gas sampling system and appropriate operations have recently described such a system , , , , . . The sensor is selfcontained, including gas handling and computation, in a standard 19 in equipment rack format, with a height of in and a depth of 18 in.

Highly Sensitive Terahertz Gas Sensor Based on Surface ...

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6/12/2017· One of the most important applications of THz frequencies is biomedical sensing. However, in a THz range, surface plasmon waves on flat metals are not confined and therefore cannot be used for subwavelength sensing. But, it has been shown that graphene can support surface waves at THz frequencies, which has similar properties as plasmonic waves in an optical range. In this paper, a …

Systematic study of broadband terahertz gas sensor ...

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29/12/2008· Broadband terahertz wave detection through fieldinduced second harmonic generation was systematically investigated using selected gases. The dependences of the detected second harmonic intensity on probe pulse energy, bias field strength, gas pressure, and third order nonlinear susceptibility are systematically investigated with xenon, nitrogen, SF6, and alkanes.

(PDF) Highly Sensitive Terahertz Gas Sensor Based on ...

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A highly sensitive terahertz gas sensor based on SPR by using fewlayer graphene is proposed (Fig. 1). In this f ivelayer configuration, we use the semicylindrical pr ism ( Germanium, Ge ) with ...

Systematic study of broadband terahertz gas sensor ...

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29/12/2008· Broadband terahertz wave detection through fieldinduced second harmonic generation was systematically investigated using selected gases. The dependences of the detected second harmonic intensity on probe pulse energy, bias field strength, gas pressure, and third order nonlinear susceptibility are systematically investigated with xenon, nitrogen, S F 6, and alkanes.

Terahertz volatile gas sensing by using polymer ...

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A compact, inexpensive, low loss, highly sensitive gas sensor is important for various biomedical and industrial applications. However, current gas sensors still have an inadequate study in terahertz (THz) frequency range. In this study, simple multilayerstacked microporous polymer membranes are experimentally validated in the THz regime for organic vapor sensing under ambient atmosphere and ...

Proposal for an integrated siliconphotonics terahertz gas ...

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Research Article Vol. 28, No. 15/20 July 2020/Optics Express 22424 Proposal for an integrated siliconphotonics terahertz gas detector using photoacoustics MATTIAS ...

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