THZ radiation
Progress in compact room temperature THz radiation sources
... compounds. THz high-resolution molecular spectroscopy makes it possible to study very diverse objects, from the biological to the cosmic scales – including the absorption and emission spectra of human tissue as ...
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High efficiency photomodulators for millimeter wave and THz radiation
... Photomodulators for mm-wave and THz radiation are an essential component for many imaging and signal processing applications. While a myriad of schemes have been devised to enhance photomodulation by ...
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Coupling of THz radiation with intervalence band transitions in microcavities
... of THz radiation and material excitations has been shown to improve the quantum efficiency of THz emitters, we have investigated here a different system, hitherto unexplored: THz polaritons ...
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Thz Radiation under Tunneling in Asymmetric Double Quatum Wells
... The asymmetric parabolic double quantum wells (DQWs) with resonant levels (the ground state energy in one well co- incides with the first excited state energy in another well) is analyzed. The splitting of these levels ...
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THz intervalence band antipolaritons
... Mode THz radiation and intervalence band transitions in quantum well gain ...interesting THz based devices based on TE modes in contrast with inter-conduction band transitions that only couple to TM ...
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Enhancement of THz generation by feedback optimized wavefront manipulation
... onto a 0.1 mm thick Beta Barium Borate (BBO) frequency doubling crystal to produce the asymmetric laser field required for the two-color THz radiation generation method. The laser pulses are focused by an f ...
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Volume and surface mode coupling experiments in periodic surface structures for use in mm-THz high power radiation sources
... Planar Periodic Surface Lattice (PSL) structures of different configurations have been designed, fabricated and measured in the 140-220 GHz frequency band. Sur- face mode resonances are observed in ‘mesh’ PSL structures. ...
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Low-loss Waveguides for THz Guidance and Devices
... 10 THz. In recent years, this intermediate THz radiation band has attracted considerable interest, because it offers significant scientific and technological potential for applications in many ...
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THz QCL self-mixing interferometry for biomedical applications
... coherent THz imaging and sensing systems that exploit the self-mixing ...a THz QCL to employ it as a homodyning ...of THz radiation in hydrated biological tissue, imaging of superficial skin ...
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THz in vivo measurements : the effects of pressure on skin reflectivity
... Since THz light is highly attenuated in skin by the high THz absorption of water, in vivo measurement of human skin can only be done in a reflection ...the THz response of skin changed most rapidly ...
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Low-loss Waveguides and Devices for Compact THz Systems
... 10 THz. In recent years, this intermediate THz radiation band has attracted considerable interest, because it offers significant scientific and technological potential for applications in many ...
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Creation of a Magnetic Driven Gate for THz Rays
... (0.1–10 THz) has increased significantly due to their unique ...of THz radiation to identify substances make it possible to use in spectroscopy, communication infrastructure, medical diagnostic ...
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Development of an intense THz source using tilted pulse front method in LiNbO 3 crystal and its application in non-linear THz spectroscopy
... intense THz research. The THz group at ALLS has successfully demonstrated the generation of high-power THz radiation using optical rectification in a large aperture zinc telluride crystal ...
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Spiral Antenna Coupled Microbridge Structures for THz Application
... (THz) radiation (0.3~10 THz), such as a good transparency of non-polar materials including cloths, envelopes and plastic packages, high reflection on metals, and very low risk for health concern, ...
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Generation of THz frequency using PANDA ring resonator for THz imaging
... The THz image shows significantly reduced absorp- tion of THz radiation in this region compared with normal tissue, which suggests its usefulness for detecting tumors (Figure ...of THz waves ...
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Design, Fabrication and Test of a Graphene-Based THz Modulator
... The physical operation of this device and the results obtained by the data can be well explained by the charge doping mechanism described in section 2.3. At the Dirac point in the graphene band structure, the density of ...
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THz waveguide adapters for efficient radiation out-coupling from double metal THz QCLs
... characterizes THz radiation makes it unclear whether passive components and circuitry in this range should be developed mimicking optics or ...routing radiation from and to components that are ...
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Monitoring leaf water content with THz and sub-THz waves
... generating THz radiation is quasi time domain ...a THz time domain spectrometer, but the fem- tosecond laser is replaced by an inexpensive multimode laser diode ...domain. THz QTDS setups for ...
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Dispersion characteristics of plasmonic waveguides for THz waves
... of THz radiation of dielectrics and metals, an outstanding problem has been the development of efficient waveguide structures with minimal transmission loss and minimal ...
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Pulsed THZ interrogation of SofI with knit lines in 2D
... Pulsed THz frequency waves have been shown to be particularly useful for the detection of voids in the Sprayed on Foam Insulation (SOFI) used on the Space Shuttle’s Thermal Protection System (TPS) ...a THz ...
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