Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Abstract
Hybrid‐order
Poincaré
beams
(HyOPBs)
with
complex
transverse
polarization
states
hold
significant
potential
in
optical
communication
and
quantum
information.
Fully
characterizing
the
parameters
of
HyOPBs
is
a
key
task
to
accelerate
applications.
Conventional
methods
typically
require
mapping
multiple
reconstructing
point
by
point,
creating
fundamental
bottleneck
for
fast
measurement
real‐time
monitoring
parameters.
In
this
work,
single‐shot
characterization
scheme
demonstrated
applying
diffractive
neural
networks
system
cascaded
metasurfaces.
The
designed
metasurfaces
essentially
function
as
an
processor,
efficiently
extracting
high‐dimensional
spatial
modes
amplitude
Whereafter,
are
accurately
predicted,
correctly
reconstructed
help
electronic
deep
networks.
This
innovative
approach
validated
through
series
simulation
studies
average
reconstruction
errors
<2.68%
σ
1.84%
θ,
respectively.
work
provides
effective
strategy
precise,
compact,
detection
HyOPBs,
paving
way
their
application
next
generation
high‐capacity
systems.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 25, 2024
Characterization
of
electromagnetic
wave
polarization
states
is
critical
in
various
applications
materials,
biomedical,
and
imaging.
The
emergence
metasurfaces
opens
up
the
possibility
implementing
highly
integrated
full-Stokes
imagers.
Despite
rapid
development,
prevailing
schemes
on
metasurface-based
imagers
require
interleaved
or
cascaded
designs,
inevitably
resulting
performance
deterioration,
bulky
size,
complicating
imaging
procedure
due
to
misalignment.
To
overcome
these
challenges,
a
non-interleaved
shared-aperture
metalens
enabled
by
prior-knowledge-driven
inverse
design
methodology
proposed.
can
be
directly
deployed
into
imagers,
performing
high-accuracy
diffraction-limited
without
other
ancillary
components,
breaking
intrinsic
constraints
efficiency
resolution
design.
demonstrate
this,
W-band
passive
system,
as
an
alternative
solution,
perform
polarimetric
imaging,
which
reduces
reliance
high
cost
complexity
ortho-mode
transducer
broadband
correlator
traditional
radiometers.
Furthermore,
with
assistance
3D
reconstruction
method,
feasibility
multi-polarization
information
for
contactless
surface
slope
measurements
explored.
This
work
may
open
new
paradigms
imager
designing
broaden
metasurface
Nanophotonics,
Journal Year:
2024,
Volume and Issue:
13(8), P. 1425 - 1433
Published: Jan. 19, 2024
Abstract
Metasurface
holograms
offer
various
advantages,
including
wide
viewing
angle,
small
volume,
and
high
resolution.
However,
full-color
animation
of
high-resolution
images
has
been
a
challenging
issue.
In
this
study,
dielectric
metasurface
holographic
movie
with
resolution
2322
×
was
achieved
by
spatiotemporally
multiplexing
30
frames
blue,
green,
red
color
channels
at
the
wavelengths
445
nm,
532
633
nm
maximum
reconstruction
speed
55.9
per
second.
The
average
transmittance
diffraction
efficiency
92.0
%
72.7
%,
respectively,
in
visible
range,
were
adopting
polarization-independent
silicon
nitride
waveguide
meta-atoms,
resulting
reproducibility.
superposition
three
adjusting
resolutions
positions
target
for
each
wavelength
while
maintaining
meta-atom
pitch
constant.
improvement
brought
about
optimization
etching
conditions
to
form
high-aspect
vertical
nanopillar
structures.
Multidiscipline Modeling in Materials and Structures,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 26, 2025
Purpose
To
determine
the
electrical,
structural,
optical
and
transport
properties
calculated
using
WIEN2k
code.
Design/methodology/approach
By
employing
code,
we
have
theoretically
examined
physical
of
full-Heusler
Te
2
AcGa
alloy.
The
FP-LAPW
technique
is
utilized
for
theoretical
calculations.
Findings
An
indirect
bandgap
0.42
eV
seen
with
GGA
potential.
enhancement
in
a
value
0.97
observed
mBJ
density
states
determined
to
verify
band
structure
profile.
dynamical
structural
stability
attained
through
computations.
electron
contour
plot
explore
bonding
nature
compound.
Optical
been
respective
potentials
showing
significant
absorption
visible
region.
Furthermore,
thermoelectric
evaluated
confirm
potential
devices.
At
elevated
temperatures,
ZT
obtained
large
0.8.
Research
limitations/implications
High
values
make
2AcGa
alloy
optoelectronic
renewable
energy
Originality/value
In
submitted
manuscript,
first
principle
calculations
are
carried
out
time
study
dynamic,
electronic,
Modified
Becke–Johnson
(mBJ)
exchange-correlation
provides
very
accurate
results.
profiles
related
present
work.
entire
work
gives
useful
results
fundamental
importance,
which
can
be
fabrication
applications.
Applied Physics Reviews,
Journal Year:
2024,
Volume and Issue:
11(2)
Published: June 1, 2024
Optical
neural
networks
(ONN)
are
experiencing
a
renaissance,
driven
by
the
transformative
impact
of
artificial
intelligence,
as
arithmetic
pressures
progressively
increasing
demand
for
optical
computation.
Diffractive
deep
(D2NN)
important
subclass
ONN,
providing
novel
architecture
computation
with
trained
diffractive
layers.
Given
that
D2NN
directly
process
light
waves,
they
inherently
parallelize
multiple
tasks
and
reduce
data
processing
latency,
positioning
them
promising
technology
future
computing
applications.
This
paper
begins
brief
review
evolution
ONN
concept
D2NN,
followed
detailed
discussion
theoretical
foundations,
model
optimizations,
application
scenarios
D2NN.
Furthermore,
analyzing
current
technical
limitations,
this
provides
an
evidence-based
prediction
trajectory
outlines
roadmap
research
development
efforts
to
unlock
its
full
potential.
