Results 11 to 20 of about 11,957 (302)
Terahertz generation by beamlet superposition
, 2018 We analytically show how a superposition of beamlets produces terahertz radiation with greater spatial homogeneity and efficiency compared to tilted-pulse-fronts generated by diffraction gratings. The advantages are particularly notable for large pump bandwiths and beam sizes, alluding to better performance in the presence of cascading effects and ...
Ravi, Koustuban +3 more
openaire +3 more sources
Study of Optical Rectification in Polycrystalline Materials Based on Random Quasi-Phase Matching
Crystals, 2022 Random quasi-phase matching (RQPM) in polycrystalline materials has been considered as an important technique for nonlinear optical frequency conversion, especially in wideband laser generation involving femtosecond lasers.
Sijia Wang +6 more
doaj +1 more source
APL Photonics, 2023 Terahertz quantum cascade laser sources based on intra-cavity Cherenkov difference-frequency generation in dual-wavelength mid-infrared quantum cascade lasers are currently the only monolithic semiconductor laser technology that can deliver continuous ...
Wolfhard Oberhausen +7 more
doaj +1 more source
iScience, 2022 Summary: The terahertz radiation from ultraintense laser-produced plasmas has aroused increasing attention recently as a promising approach toward strong terahertz sources.
Hong-Yi Lei +8 more
doaj +1 more source
Nanophotonics, 2022 Efficient terahertz generation and detection are a key prerequisite for high performance terahertz systems. Major advancements in realizing efficient terahertz emitters and detectors were enabled through photonics-driven semiconductor devices, thanks to ...
Lu Ping-Keng +7 more
doaj +1 more source
Enhancement of THz generation in LiNbO3 waveguides via multi-bounce velocity matching
Light: Science & Applications, 2022 To realize the full promise of terahertz polaritonics (waveguide-based terahertz field generation, interaction, and readout) as a viable spectroscopy platform, much stronger terahertz fields are needed to enable nonlinear and even robust linear terahertz
Blake S. Dastrup +4 more
doaj +1 more source
Recent Progress in the Development of Graphene Detector for Terahertz Detection
Sensors, 2021 Terahertz waves are expected to be used in next-generation communications, detection, and other fields due to their unique characteristics. As a basic part of the terahertz application system, the terahertz detector plays a key role in terahertz ...
Jianlong Liu +9 more
doaj +1 more source
IEEE Photonics Journal, 2019 Enhanced terahertz wave generation via Stokes wave recycling in a non-synchronously picosecond pulse pump configuration has been demonstrated. It is theoretically analyzed that under the condition of high pump peak power density, the oscillation of the ...
Chao Yan +10 more
doaj +1 more source
Multichannel terahertz quasi-perfect vortex beams generation enabled by multifunctional metasurfaces
Nanophotonics, 2022 Vortex beams carrying orbital angular momentum (OAM) open a new perspective in various terahertz research. Multichannel and divergence controllable terahertz vortex beam generation holds the key to promoting the development of OAM related terahertz ...
Liu Wanying +7 more
doaj +1 more source
Near-Field Analysis of Terahertz Pulse Generation From Photo-Excited Charge Density Gradients [PDF]
, 2015 Excitation of photo-current transients at semiconductor surfaces by subpicosecond optical pulses gives rise to emission of electromagnetic pulses of terahertz (THz) frequency radiation.
Natrella, M +12 more
core +1 more source