Terahertz nonlinear optics of graphene: from saturable absorption to high‐harmonics generation
Graphene has long been predicted to show exceptional nonlinear optical properties,
especially in the technologically important terahertz (THz) frequency range. Recent …
especially in the technologically important terahertz (THz) frequency range. Recent …
Review of GaN-based devices for terahertz operation
K Ahi - Optical Engineering, 2017 - spiedigitallibrary.org
GaN provides the highest electron saturation velocity, breakdown voltage, operation
temperature, and thus the highest combined frequency-power performance among …
temperature, and thus the highest combined frequency-power performance among …
Quality control and authentication of packaged integrated circuits using enhanced-spatial-resolution terahertz time-domain spectroscopy and imaging
K Ahi, S Shahbazmohamadi, N Asadizanjani - Optics and Lasers in …, 2018 - Elsevier
In this paper, a comprehensive set of techniques for quality control and authentication of
packaged integrated circuits (IC) using terahertz (THz) time-domain spectroscopy (TDS) is …
packaged integrated circuits (IC) using terahertz (THz) time-domain spectroscopy (TDS) is …
Thermodynamic picture of ultrafast charge transport in graphene
The outstanding charge transport properties of graphene enable numerous electronic
applications of this remarkable material, many of which are expected to operate at ultrahigh …
applications of this remarkable material, many of which are expected to operate at ultrahigh …
Mathematical modeling of THz point spread function and simulation of THz imaging systems
K Ahi - IEEE Transactions on Terahertz Science and …, 2017 - ieeexplore.ieee.org
This paper presents a comprehensive theory for cohesive mathematical modeling and
simulation of THz imaging systems. For mathematical modeling of the point spread function …
simulation of THz imaging systems. For mathematical modeling of the point spread function …
Terahertz spectroscopy of nanomaterials: a close look at charge‐carrier transport
P Kužel, H Němec - Advanced Optical Materials, 2020 - Wiley Online Library
Terahertz spectroscopy has been used for almost two decades for investigations of
nanomaterials, including nanocrystals, nanoparticles, nanowires, nanotubes or 2D crystals …
nanomaterials, including nanocrystals, nanoparticles, nanowires, nanotubes or 2D crystals …
Terahertz-triggered phase transition and hysteresis narrowing in a nanoantenna patterned vanadium dioxide film
ZJ Thompson, A Stickel, YG Jeong, S Han, BH Son… - Nano …, 2015 - ACS Publications
We demonstrate that high-field terahertz (THz) pulses trigger transient insulator-to-metal
transition in a nanoantenna patterned vanadium dioxide thin film. THz transmission of …
transition in a nanoantenna patterned vanadium dioxide thin film. THz transmission of …
Terahertz-induced high-order harmonic generation and nonlinear charge transport in graphene
We theoretically study the terahertz-induced high-order harmonic generation (HHG) and
nonlinear electric transport in graphene based on the quantum master equation with the …
nonlinear electric transport in graphene based on the quantum master equation with the …
Extended depth of field in continuous-wave terahertz computed tomography based on Bessel beam
D Wang, B Li, L Rong, Z Xu, Y Zhao, J Zhao… - Optics …, 2019 - Elsevier
Terahertz (THz) radiation is able to penetrate many different types of nonpolar and
nonmetallic materials. THz imaging can be combined with computed tomography (CT) to …
nonmetallic materials. THz imaging can be combined with computed tomography (CT) to …
Terahertz electric field modulated mode coupling in graphene-metal hybrid metamaterials
Taking advantage of the tunable conductivity of graphene under high terahertz (THz) electric
field, a graphene-metal hybrid metamaterial consisting of an array of three adjoined …
field, a graphene-metal hybrid metamaterial consisting of an array of three adjoined …