Results 11 to 20 of about 1,986,833 (274)

Laser‐Driven Strong‐Field Terahertz Sources [PDF]

Advanced Optical Materials, 2019
AbstractA review on the recent development of intense laser‐driven terahertz (THz) sources is provided here. The technologies discussed include various types of sources based on optical rectification (OR), spintronic emitters, and laser‐filament‐induced plasma. The emphasis is on OR using pump pulses with tilted intensity front.
Fülöp, József András, Tzortzakis, Stelios, Kampfrath, Tobias   +2 more
openaire   +4 more sources

Graphene-based plasmonic metamaterial for terahertz laser transistors. [PDF]

Nanophotonics, 2022
This paper reviews recent advances in the research and development of graphene-based plasmonic metamaterials for terahertz (THz) laser transistors. The authors’ theoretical discovery on THz laser transistors in 2007 was realized as a distributed-feedback
Otsuji T, Boubanga-Tombet SA, Satou A, Yadav D, Fukidome H, Watanabe T, Suemitsu T, Dubinov AA, Popov VV, Knap W, Kachorovskii V, Narahara K, Ryzhii M, Mitin V, Shur MS, Ryzhii V.   +15 more
europepmc   +2 more sources

DUAL-FREQUENCY TERAHERTZ LASER

Radio physics and radio astronomy
Subject and Purpose. The development of the terahertz (THz) frequency range reflects recent progress in radiation sources, in particular, THz (submillimeter) lasers. Heterodyne THz devices require dual-frequency lasers capable of emitting two different THz frequencies simultaneously.
M. Dzyubenko, Yu. Kamenev, V. Radionov
openaire   +2 more sources

Modeling of anisotropic properties of double quantum rings by the terahertz laser field. [PDF]

Sci Rep, 2018
The rendering of different shapes of just a single sample of a concentric double quantum ring is demonstrated realizable with a terahertz laser field, that in turn, allows the manipulation of electronic and optical properties of a sample.
Baghramyan HM, Barseghyan MG, Kirakosyan AA, Ojeda JH, Bragard J, Laroze D.   +5 more
europepmc   +2 more sources

Short pulse generation from a graphene-coupled passively mode-locked terahertz laser [PDF]

Nature Photonics, 2022
The generation of stable trains of ultrashort (femtosecond to picosecond), terahertz-frequency radiation pulses with large instantaneous intensities is an underlying requirement for the investigation of light–matter interactions for metrology and ...
E. Riccardi, V. Pistore, Seong-Riong D. Kang, L. Seitner, A. De Vetter, C. Jirauschek, J. Mangeney, Lianhe H. Li, A. Davies, E. Linfield, A. Ferrari, S. Dhillon, M. Vitiello   +12 more
semanticscholar   +1 more source

Highly efficient broadband terahertz generation from ultrashort laser filamentation in liquids

Nature Communications, 2017
Developing simple and efficient table-top sources of intense terahertz radiation is an ongoing pursuit. Here, Dey et al. demonstrate broadband terahertz generation from laser filamentation in liquids with an order of magnitude higher energy than from ...
Indranuj Dey, Kamalesh Jana, Vladimir Yu. Fedorov, Anastasios D. Koulouklidis, Angana Mondal, Moniruzzaman Shaikh, Deep Sarkar, Amit D. Lad, Stelios Tzortzakis, Arnaud Couairon, G. Ravindra Kumar   +10 more
doaj   +2 more sources

High power surface emitting terahertz laser with hybrid second- and fourth-order Bragg gratings. [PDF]

Nat Commun, 2018
A surface-emitting distributed feedback (DFB) laser with second-order gratings typically excites an antisymmetric mode that has low radiative efficiency and a double-lobed far-field beam.
Jin Y, Gao L, Chen J, Wu C, Reno JL, Kumar S.   +5 more
europepmc   +2 more sources

Laser-induced terahertz spin transport in magnetic nanostructures arises from the same force as ultrafast demagnetization [PDF]

Physical review B, 2021
Laser-induced terahertz spin transport (TST) and ultrafast demagnetization (UDM) are central but so far disconnected phenomena in femtomagnetism and terahertz spintronics.
R. Rouzegar, L. Brandt, L. Nádvorník, D. Reiss, A. Chekhov, O. Gueckstock, C. In, M. Wolf, T. Seifert, P. Brouwer, G. Woltersdorf, T. Kampfrath   +11 more
semanticscholar   +1 more source

Terahertz laser field manipulation on the electronic and nonlinear optical properties of laterally-coupled quantum well wires.

Optics Express, 2022
An intense terahertz laser field is shown to actively manipulate the electronic states, as well as the linear and nonlinear optical absorption coefficients, of the laterally-coupled quantum well wires (LCQWWs).
Guanghui Liu, Yanan Cao, Renming Liu, Gengyan Chen, Feng Wu, Yun-Bao Zheng, Zhanxu Chen, K. Guo, Liangliang Lu   +8 more
semanticscholar   +1 more source

Multi-millijoule terahertz emission from laser-wakefield-accelerated electrons

Light: Science & Applications, 2023
High-power terahertz radiation was observed to be emitted from a gas jet irradiated by 100-terawatt-class laser pulses in the laser-wakefield acceleration of electrons.
T. Pak, M. Rezaei-Pandari, Sang Beom Kim, G. Lee, D. Wi, Calin Ioan Hojbota, M. Mirzaie, Hyeongmun Kim, J. Sung, S. Lee, Chul Kang, Ki-Yong Kim   +11 more
semanticscholar   +1 more source