Perspectives on THz Time Domain Spectroscopy
نویسندگان
چکیده
منابع مشابه
THz time-domain spectroscopy and IR spectroscopy on MoS2
In the increasing research field of 2D materials such as graphene, molybdenum disulfide MoS2 has attracted great interest due to the existence of a direct bandgap in monolayer MoS2, which gives the possibility of achieving MoS2 fieldeffect transistors or optoelectronic devices. We analyzed by THz time-domain spectroscopy (THz-TDS) up to 2 THz and infrared (IR) spectroscopy, CVD-obtained MoS2 us...
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Terahertz range of electromagnetic spectrum (0.1 ÷ 10) THz has focused attention of scientists for years because of many interesting features including existence of spectral fingerprints of many materials (also explosives), through clothing imaging and safety for human being. Such advantages are of great importance for biochemical, defense and security related applications. Scanning of pure exp...
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THz time-domain spectroscopy is used to measure the frequency dependent (0.2– 2.0 THz) complex refractive index of a pure liquid crystal (LC), 40-n-pentyl-4-cyanobiphenyl (5CB), and its LC colloids with SiO2 particles. While the refractive index of the pure LC is found to vary markedly due to distinct orientated domains within the sample, the LC colloids provide us with very stable and reproduc...
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Using an optoelectronic THz beam system for THz time-domain spectroscopy ~THz TDS!, we have measured the absorption and index of refraction of a conducting polypyrrole film from low frequencies to 2.5 THz. From these measurements, the dc conductivity of 215/~V cm! and the complex conductance were obtained over this frequency range. All of the results were well fit by Drude theory, which gives a...
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Terahertz-range dielectric properties of the common polymers low-density polyethylene (LDPE), cyclic olefin/ethylene copolymer (TOPAS), polyamide-6 (PA6), and polytetrafluoroethylene (PTFE or Teflon) are characterized in the ultra-broadband frequency window 2-15 THz, using a THz time-domain spectrometer employing air-photonics for the generation and detection of single-cycle sub-50 fs THz trans...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of Korea
سال: 2004
ISSN: 1226-4776
DOI: 10.3807/josk.2004.8.1.034