scholarly journals Nonlinear intensity dependence of edge photocurrents in graphene induced by terahertz radiation

2021 ◽  
Vol 104 (15) ◽  
Author(s):  
S. Candussio ◽  
L. E. Golub ◽  
S. Bernreuter ◽  
T. Jötten ◽  
T. Rockinger ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Intensity Dependence

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

A New Deep Acceptor in Epitaxial Cubic SiC

1989 ◽  
Vol 162 ◽  
Author(s):  
J. A. Freitas ◽  
S. G. Bishop
Keyword(s):  
Thin Films ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Excitation Intensity ◽  
Acceptor Pair ◽  
Deep Acceptor ◽  
Intensity Dependence ◽  
Pl Spectra ◽  
Donor Acceptor ◽  
Donor Acceptor Pair

ABSTRACTThe temperature and excitation intensity dependence of photoluminescence (PL) spectra have been studied in thin films of SiC grown by chemical vapor deposition on Si (100) substrates. The low power PL spectra from all samples exhibited a donor-acceptor pair PL band which involves a previously undetected deep acceptor whose binding energy is approximately 470 meV. This deep acceptor is found in every sample studied independent of growth reactor, suggesting the possibility that this background acceptor is at least partially responsible for the high compensation observed in Hall effect studies of undoped films of cubic SiC.

Selective Properties of a Planar Electrodynamic System for Two-Stage Generation of Terahertz Radiation

2018 ◽  
Vol 13 (1) ◽  
pp. 13-24
Author(s):  
A. V. Arzhannikov ◽  
◽  
P. V Kalinin ◽  
E. S. Sandalov ◽  
S. L. Sinitsky ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Electrodynamic System ◽  
Two Stage

Electro-optical detection of terahertz radiation in a zinc sulphide crystal at a wavelength of 512 nm

2020 ◽  
Vol 13 (11) ◽  
pp. 112007
Author(s):  
Joel Edouard Nkeck ◽  
Xavier Ropagnol ◽  
Riad Nechache ◽  
François Blanchard
Keyword(s):  
Terahertz Radiation ◽  
Optical Detection ◽  
Zinc Sulphide

Photon Counting Microscopy of Terahertz Radiation

2008 ◽  
Vol 36 (Supplement) ◽  
pp. 130-131
Author(s):  
Kenji Ikushima
Keyword(s):  
Terahertz Radiation ◽  
Photon Counting

Generation of Terahertz Radiation in Magnetic Junctions Based on Nanowires

2019 ◽  
Vol 45 (3) ◽  
pp. 271-273 ◽  
Author(s):  
Yu. V. Gulyaev ◽  
S. G. Chigarev ◽  
A. I. Panas ◽  
E. A. Vilkov ◽  
N. A. Maksimov ◽  
...  
Keyword(s):  
Terahertz Radiation

Properties of One-Dimensional Metal Gratings at Inclined Incidence of Terahertz Radiation

2020 ◽  
Author(s):  
Mikhail Dzyubenko ◽  
Sergey Masalov ◽  
Yuriy Kamenev ◽  
Ivan Kolenov ◽  
Viktor Pelipenko ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
One Dimensional ◽  
Metal Gratings
Sign in / Sign up

Export Citation Format

Share Document