Results 41 to 50 of about 39,723 (259)

Resonant plasma excitation by single-cycle THz pulses [PDF]

, 2018
In this paper, an alternative perspective for the generation of millimetric high-gradient resonant plasma waves is discussed. This method is based on the plasma-wave excitation by energetic single-cycle THz pulses whose temporal length is comparable to ...
Curcio, A., Dolci, V., Lupi, S., Marocchino, A., Petrarca, M.   +4 more
core   +2 more sources

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

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

Hybridization of optical plasmonics with terahertz metamaterials to create multi-spectral filters [PDF]

, 2013
Multi-spectral imaging systems typically require the cumbersome integration of disparate filtering materials in order to work simultaneously in multiple spectral regions.
Cumming, D.R.S., Drysdale, T.D., Grant, J., McCrindle, I.J.H.   +3 more
core   +1 more source

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

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 amplifiers based on gain reflectivity in cuprate superconductors

Physical Review Research, 2022
We demonstrate that parametric driving of suitable collective modes in cuprate superconductors results in a reflectivity R>1 for frequencies in the low terahertz regime.
Guido Homann, Jayson G. Cosme, Ludwig Mathey   +2 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

Terahertz Radiation Detection by Field Effect Transistor in Magnetic Field

, 2009
We report on terahertz radiation detection with InGaAs/InAlAs Field Effect Transistors in quantizing magnetic field. The photovoltaic detection signal is investigated at 4.2 K as a function of the gate voltage and magnetic field.
Boubanga-Tombet, S., Coquillat, D., Dyakonov, M. I., Grynberg, M., Karpierz, K., Knap, W., Lusakowski, J., Sakowicz, M., Teppe, F.   +8 more
core   +3 more sources