Strong and narrowband terahertz radiation from GaAs based pHEMT and terahertz imaging
Sign Up to like & getrecommendations! Published in 2020 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32525
Abstract: Strong and narrowband terahertz (THz) radiation is obtained from a GaAs‐based pseudomorphic high‐electron‐mobility transistor (pHEMT). The radiation properties with respect to the bias conditions and operating temperature are extensively characterized. The maximum emission power is… read more here.
Keywords: phemt; strong narrowband; terahertz; radiation ... See more keywords
Tunable ultra-narrowband terahertz perfect absorber by using metal-insulator-metal microstructures
Sign Up to like & getrecommendations! Published in 2019 at "Results in Physics"
DOI: 10.1016/j.rinp.2019.102176
Abstract: Abstract An ultra-narrowband terahertz (THz) perfect absorber with metal-insulator-metal (PA-MIM) microstructures is presented. MIM microstructures is composed of Al disk on SiO2/Al/Si substrate. This MIM configuration will induce dipole-image interaction and cause an electromagnetic confinement… read more here.
Keywords: thz; metal; mim; narrowband terahertz ... See more keywords
Intense narrowband terahertz pulses produced by obliquely colliding laser pulses in helium gas
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Plasmas"
DOI: 10.1063/5.0142159
Abstract: A practical configuration for generating narrowband terahertz (THz) pulses based on plasma dipole oscillations (PDOs) is studied using two-dimensional particle-in-cell simulations. In this scheme, two slightly detuned laser pulses collide obliquely in a helium gas.… read more here.
Keywords: narrowband terahertz; laser; helium gas; obliquely colliding ... See more keywords
Generation of narrowband terahertz radiation via phonon mode enhanced nonlinearities in a BaGa4Se7 crystal.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.399895
Abstract: We report on narrowband terahertz (THz) radiation generation via optical rectification from a BaGa4Se7 crystal. The dense phonon mode distribution of the BaGa4Se7 crystal causes narrow transmission bands in the THz frequency range with enhanced… read more here.
Keywords: thz; generation; narrowband terahertz; baga4se7 crystal ... See more keywords
Highly efficient narrowband terahertz generation driven by a two-spectral-line laser in PPLN
Sign Up to like & getrecommendations! Published in 2022 at "Optics Letters"
DOI: 10.1364/ol.448457
Abstract: 1Deutsches Elektronen-Synchrotron (DESY), Center for Free-Electron Laser Science, Notkestrasse 85, 22607 Hamburg, Germany 2School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China 3The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee… read more here.
Keywords: efficient narrowband; laser; hamburg; narrowband terahertz ... See more keywords