Design and Analysis of Terahertz Wave All-Dielectric Grating Magnetic Reflector
Journal of Electronic Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 22, 2025
Язык: Английский
Design of a Polarization-Insensitive and Wide-Angle Triple-Band Metamaterial Absorber
Shaoxin Zheng,
Manna Gu,
Guilan Feng
и другие.
Photonics,
Год журнала:
2025,
Номер
12(4), С. 386 - 386
Опубликована: Апрель 16, 2025
This
paper
proposes
a
tri-band
wide-angle
polarization-insensitive
absorber
operating
in
the
C-band
and
Ku-band,
based
on
design
concept
of
metal–dielectric–metal.
The
achieves
absorption
efficiencies
99.05%,
99.3%,
97.9%
at
4.23
GHz,
7.403
14.813
respectively.
first
two
frequencies
are
C-band,
while
third
frequency
is
both
which
commonly
used
satellite
communication.
designed
consists
three
differently
sized
regular
hexagonal
rings.
To
analyze
interaction
mechanism
between
electromagnetic
wave
absorber,
we
applied
theory
impedance
matching
equivalent
media
to
metamaterial
properties
absorber.
In
addition,
circuit
model
has
been
analyzed.
We
then
determined
existence
coupled
resonances
top
bottom
surfaces
by
analyzing
distribution
electric
field,
magnetic
surface
currents
By
varying
polarization
angle
incident
incoming
wave,
found
that
exhibits
insensitivity
characteristics.
TE
TM
waves
maintain
more
than
90%
efficiency
up
angles
50°
60°,
absorber’s
thickness
1.07
mm,
0.0154
times
wavelength
corresponding
lowest
resonant
(λ0),
edge
length
subunit’s
hexagon
7.5
mm
(0.108λ0),
making
sub-wavelength
scale
maintaining
its
compactness.
proposed
operates
can
be
field
communications,
achieving
functions
such
as
shielding
stealth.
Язык: Английский
Large-angle directional scattering of terahertz beams based on all-dielectric metasurface
The European Physical Journal D,
Год журнала:
2025,
Номер
79(5)
Опубликована: Май 1, 2025
Язык: Английский
Convolutional neural network for coded metasurface inverse design
Applied Physics B,
Год журнала:
2025,
Номер
131(6)
Опубликована: Май 10, 2025
Язык: Английский
Real-time Holographic Imaging Programmable Metasurfaces Based on Hardware Accelerator Computation
Precision Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 1, 2025
Язык: Английский
Optimal forming region of Er3+-doped TeO2-BaO-Nb2O5 glass and its luminescence properties at 2.7 μm
Optical Materials,
Год журнала:
2025,
Номер
unknown, С. 117177 - 117177
Опубликована: Май 1, 2025
Язык: Английский
基于超快光纤光源的脉冲内差频产生中红外激光的研究进展(特邀)
Acta Optica Sinica,
Год журнала:
2024,
Номер
44(17), С. 1732013 - 1732013
Опубликована: Янв. 1, 2024
Effective sensitization of Dy3+:6H11/2 energy level by Tm3+ ions in KPb2Br5 crystal for 4.3 μm lasers
Optics Letters,
Год журнала:
2024,
Номер
49(24), С. 7036 - 7036
Опубликована: Ноя. 27, 2024
To
the
best
of
our
knowledge,
this
is
first
study
to
investigate
use
Tm
Язык: Английский
Evaluating the Impact of Water Vapor for Aerosol and Carbon Dioxide Detection Lidar CO₂ Measurement Onboard the Atmospheric Environment Monitoring Satellite
Optics Express,
Год журнала:
2024,
Номер
32(27), С. 48340 - 48340
Опубликована: Дек. 10, 2024
Global
warming,
driven
by
greenhouse
gas
emissions
from
human
activities,
poses
significant
environmental
challenges.
Accurate
measurement
data
are
crucial
for
effective
emission
reduction
policies
and
international
cooperation.
The
spaceborne
integrated
path
differential
absorption
lidar
offers
high
precision
monitoring
global
atmospheric
carbon
dioxide
(CO2)
concentrations
on
both
days
nights.
However,
its
accuracy
can
be
compromised
water
vapor
interference.
We
evaluated
the
impact
of
CO2
detection,
focusing
measurements
an
aerosol
detection
onboard
environment
satellite.
bias
due
to
was
negligible.
broadened
spectrum,
causing
molecular
interference,
which
could
introduce
considerable
column
(XCO2)
bias.
In
areas
with
vapor,
exceed
1
ppm.
Globally,
annual
average
XCO2
broadening
effects
0.42
analysis
highlights
importance
account
spectrum
effects,
not
only
in
such
as
ACDL
but
also
other
techniques
improve
enhance
our
understanding
climate
change
cycles.
Язык: Английский
Enhanced spectral resolution in mid-infrared dual-comb spectroscopy via synchronous offset frequency tuning
Optics Express,
Год журнала:
2024,
Номер
33(1), С. 910 - 910
Опубликована: Дек. 19, 2024
Mid-infrared
dual-comb
spectroscopy
offers
significant
advantages
by
combining
the
high
sensitivity
of
mid-infrared
with
spectral
resolution
and
rapid
acquisition
method.
However,
its
effective
resolution,
constrained
inherent
comb
line
spacing,
hinders
ability
to
resolve
narrow
absorption
features,
common
in
critical
applications
such
as
sub-Doppler
spectroscopy,
low-pressure
gas
analysis,
construction
atmospheric
profile.
To
address
this
challenge,
we
present
a
synchronous
offset
frequency
tuning
method
for
system
improve
far
beyond
spacing.
In
our
system,
source
is
generated
from
near-infrared
continuous-wave
pump
laser
via
difference
generation
single
periodically
poled
lithium
niobate
bulk.
By
adjusting
phase-lock
one
combs,
synchronously
tune
frequencies
both
combs
without
changing
source.
We
demonstrated
that
enabled
overlapped
lines
ethane
around
3000
cm-1,
achieving
uniform
sampling
interval
10
MHz
interleaved
spectrum
25-fold
enhancement
resolution.
This
approach
allows
sub-MHz
any
modifications
data
offering
possibilities
high-precision
analysis.
Язык: Английский