Results 11 to 20 of about 2,677,605 (251)

Accurate determination of terahertz optical constants by vector network analyzer of Fabry-Perot response [PDF]

open access: yes, 2013
This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.38.005438.
Wang, X   +4 more
core   +5 more sources

Ultrafast carrier dynamics in terahertz photoconductors and photomixers: beyond short-carrier-lifetime semiconductors

open access: yesNanophotonics, 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

open access: yesLight: 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

On-chip THz studies of low-dimensional semiconductor systems [PDF]

open access: yes, 2013
A wide range of novel on-chip integration techniques were developed to explore the low-temperature perturbation of GaAs/AlGaAs based confined electron systems at terahertz frequencies.
Mistry, Divyang Kishore
core   +6 more sources

Recent Progress in the Development of Graphene Detector for Terahertz Detection

open access: yesSensors, 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

Intracavity terahertz optical parametric oscillators [PDF]

open access: yes, 2011
This thesis describes the design and implementation of several novel, nanosecond pulsed, intracavity optical parametric oscillators for the generation of terahertz radiation.
Walsh, David A.
core   +2 more sources

Enhanced Terahertz Wave Generation via Stokes Wave Recycling in Non-Synchronously Picosecond Pulse Pumped Terahertz Source

open access: yesIEEE 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

open access: yesNanophotonics, 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]

open access: yes, 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

Giant room-temperature nonlinearities in a monolayer Janus topological semiconductor

open access: yesNature Communications, 2023
Nonlinear optical materials possess wide applications, ranging from terahertz and mid-infrared detection to energy harvesting. Recently, the correlations between nonlinear optical responses and certain topological properties, such as the Berry curvature ...
Jiaojian Shi   +18 more
doaj   +1 more source

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