Results 51 to 60 of about 2,058,874 (276)

Enhancement of Terahertz radiation due to excitation of SPW on graphene strip coated on GaAs structure

Results in Optics, 2023
The present study proposes a methodology for improving terahertz (THz) radiation through the utilisation of a laser directed towards a graphene strip that has been coated onto a GaAs structure.
Sandeep, Hitendra K. Malik
doaj   +1 more source

High-Energy, Short-Duration Bursts of Coherent Terahertz Radiation from an Embedded Plasma Dipole

Scientific Reports, 2018
Emission of radiation from electrons undergoing plasma oscillations (POs) at the plasma frequency has attracted interest because of the existence of intriguing and non-trivial coupling mechanism between the electrostatic PO and the emitted ...
K. B. Kwon, T. Kang, H. Song, Young-Kuk Kim, B. Ersfeld, D. Jaroszynski, M. Hur   +6 more
semanticscholar   +1 more source

A tunable radiation source by coupling laser-plasma-generated electrons to a periodic structure [PDF]

, 2011
Near-infrared radiation around 1000 nm generated from the interaction of a high-density MeV electron beam, obtained by impinging an intense ultrashort laser pulse on a solid target, with a metal grating is observed experimentally.
A. Kon, B. H. Zhang, B. Zhu, H. B. Wang, H. B. Zhuo, L. Wang, M. Nakatsutsumi, M. Y. Yu, R. Kodama, Y. C. Wu, Y. Q. Gu, Z. Jin, Z. L. Chen, Z. M. Sheng   +13 more
core   +1 more source

Terahertz pulse radiation from argon clusters

Optics Express, 2009
The characteristics of THz pulse radiation from argon clusters irradiated with intense femtosecond laser pulses have been investigated. The average power of the THz pulses radiated from argon clusters is approximately 40 times greater than that from argon gas.
Takeshi, Nagashima, Heijiro, Hirayama, Kyoji, Shibuya, Masanori, Hangyo, Masaki, Hashida, Shigeki, Tokita, Shuji, Sakabe   +6 more
openaire   +2 more sources

The Impact of Structural Parameters of Split-Ring Resonators on the Terahertz Radiation Characteristics of Micro-Structured Photoconductive Antennas: A Simulation Study

IEEE Photonics Journal, 2020
In this study, we have theoretically designed a micro-structured photoconductive antenna based on the combination of split-ring resonator (SRR) and dipole photoconductive antenna.
Hu Deng, Zhonggang Xiong, Weiwei Qu, Zhixiang Wu, Quancheng Liu, Linyu Chen, Jin Guo, Liping Shang   +7 more
doaj   +1 more source

Terahertz plasmonic laser radiating in an ultra-narrow beam

, 2016
Plasmonic lasers (spasers) generate coherent surface-plasmon-polaritons (SPPs) and could be realized at subwavelength dimensions in metallic cavities for applications in nanoscale optics. Plasmonic cavities are also utilized for terahertz quantum-cascade
Khanal, Sudeep, Kumar, Sushil, Reno, John L., Wu, Chongzhao   +3 more
core   +1 more source

Counterpropagating frequency mixing with terahertz waves in diamond [PDF]

, 2012
Frequency conversion by means of Kerr-nonlinearity is one of the most common and exploited nonlinear optical processes in the UV, visible, IR and Mid-IR spectral regions.
Alessandro Busacca, Chan, Conti, Cook, Dai, Dai, Daniele Faccio, Ding, Eleonora Rubino, Gallo, Karpowicz, Levenson, Liu, Lu, Lucia Caspani, Marco Cassataro, Marco Peccianti, Matteo Clerici, Nahata, Novitsky, Ohlhoff, Reimann, Roberto Morandotti, Suizu, Tonouchi, Tsuneyuki Ozaki, Wang, Williams, Zhao   +28 more
core   +3 more sources

Acoustic phase imaging with terahertz radiation

Optics Express, 2007
We report on acoustic phase imaging of objects using terahertz radiation. The sensitivity of the technique is sufficient to detect objects at oscillation amplitudes down to about 300 nm. Such acoustic amplitudes are comparable to the human physiological perception level, which offers novel opportunities in security imaging.
Federico, Buersgens, Guillermo, Acuna, Roland, Kersting   +2 more
openaire   +2 more sources

Using 0.1 THz Radiation Regulates Collagen Synthesis Through TGF-β/Smad Signaling Pathway in Human Fetal Scleral Fibroblasts

Cells
Scleral tissue is a connective tissue made up of dense, intertwined collagen fibers that plays a vital part in preserving both the integrity of vision and the shape of the eyeball. Numerous studies have been conducted on the impact of terahertz radiation
Wenxia Wang, Liu Sun, Lei Wang, Jinwu Zhao, Shuocheng She, Pandeng Hou, Mingxia He   +6 more
doaj   +1 more source

Research Progress of Terahertz Wave Radiation Source

Guangtongxin yanjiu, 2021
Terahertz band in electromagnetic spectrum has many properties than traditional light source, which has very important research value in biology, material, security, communication and other fields.
Ge WANG, Ming-deng SHI, Qing-hua HAN, Hong-bing MENG, De-bin ZENG   +4 more
doaj   +1 more source