Photonics,
Journal Year:
2024,
Volume and Issue:
11(5), P. 442 - 442
Published: May 9, 2024
The
interplay
between
two
paradigms,
artificial
intelligence
(AI)
and
optical
metasurfaces,
nowadays
appears
obvious
unavoidable.
AI
is
permeating
literally
all
facets
of
human
activity,
from
science
arts
to
everyday
life.
On
the
other
hand,
metasurfaces
offer
diverse
sophisticated
multifunctionalities,
many
which
appeared
impossible
only
a
short
time
ago.
use
for
optimization
general
approach
that
has
become
ubiquitous.
However,
here
we
are
witnessing
two-way
process—AI
improving
but
some
also
AI.
helps
design,
analyze
utilize
while
ensure
creation
all-optical
chips.
This
ensures
positive
feedback
where
each
enhances
one:
this
may
well
be
revolution
in
making.
A
vast
number
publications
already
cover
either
first
or
second
direction;
modest
includes
both.
an
attempt
make
reader-friendly
critical
overview
emerging
synergy.
It
succinctly
reviews
research
trends,
stressing
most
recent
findings.
Then,
it
considers
possible
future
developments
challenges.
author
hopes
broad
interdisciplinary
will
useful
both
dedicated
experts
scholarly
audience.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
12(13)
Published: Jan. 31, 2024
Abstract
Halide
perovskites
have
become
a
versatile
platform
not
only
for
optoelectronic
devices
but
also
modern
optics
and
nanophotonics.
Perovskite
nano‐
micro‐particles,
metasurfaces,
photonic
crystals
demonstrate
their
applicability
directional
enhanced
photo‐
electro‐luminescence,
lasing,
as
well
improving
the
performance
of
devices.
However,
ionic
nature
makes
water
soluble,
while
high
sensitivity
to
diverse
chemicals
complicates
patterning
toward
formation
functional,
high‐quality
nanostructures.
Here,
recent
progress
on
emerging
laser
technologies
processing
nanopatterning
halide
perovskites,
applications
in
designing
advanced
light‐emitting
systems
controlling
light
at
nanoscale
is
overviewed.
Special
emphasis
made
processes
underlying
interaction
radiation
with
disclose
new
avenues
surface
volume
modification
ultra‐high
precision
degree
material's
property
control.
Opto-Electronic Advances,
Journal Year:
2024,
Volume and Issue:
7(8), P. 240095 - 240095
Published: Jan. 1, 2024
Based
on
the
principle
of
super-symmetric
lens
with
quadratic
phase
gradient
transformation,
combined
digital
coding
metasurface,
we
propose
a
wide-angle
coded
metalens
for
focusing
control
in
two-dimensional
space.
This
achieves
focus
shift
x-direction
by
changing
oblique
incidence
angle
incident
wave,
and
y-direction
combining
convolution
digitally
metasurface
to
achieve
flexible
light
plane.
The
unit
is
mainly
composed
three-layer
metal
structure
two
layers
medium,
transmission
obtained
middle
layer
structure,
which
turn
obtains
required
distribution
metalens.
design
realizes
function
large
viewing
at
x-polarized
incidence,
control.
Experimentally,
prepared
designed
tested
experimental
results
are
good
agreement
results.
Physical Review Letters,
Journal Year:
2025,
Volume and Issue:
134(11)
Published: March 20, 2025
The
intrinsic
chirality
of
natural
materials
is
known
to
be
weak,
prompting
extensive
efforts
enhance
chiral
light-matter
interactions
on
the
metasurface
platform.
Chiral
metasurfaces
are
typically
created
by
manipulating
geometry
nanostructures,
such
as
three-dimensional
helical
structures
and
slanted
structures.
However,
these
approaches
generally
challenging
implement
experimentally
in
optical
frequency
ranges.
Here,
we
present
achievement
significant
planar
lithium
niobate
metasurfaces.
We
theoretically
demonstrate
that
birefringence
enables
a
strong
coupling
between
two
nearly
degenerate
resonant
modes
when
rotating
axis.
Despite
achiral
geometric
morphology
structure,
show
mixed
exhibit
can
produce
full
circular
dichroism
signals.
Moreover,
validate
our
theoretical
proposal
using
advanced
process
technique
for
nanostructures
measured
signal
reaches
−0.53.
These
findings
offer
new
possibilities
metaphotonics.
locked
icon
Physics
Subject
Headings
(PhySH)Fano
resonanceNanophotonicsPhotonic
crystalsPhotonicsNonlinear
materialsPolarizationDielectric
spectroscopy
Journal of Optics,
Journal Year:
2024,
Volume and Issue:
26(5), P. 055003 - 055003
Published: April 4, 2024
Abstract
We
generalize
the
concept
of
optical
scattering
matrix
(
S
-matrix)
to
characterize
harmonic
generation
and
frequency
mixing
in
planar
metasurfaces
limit
undepleted
pump
approximation.
show
that
symmetry
properties
such
nonlinear
-matrix
are
determined
by
metasurface
symmetries
at
macroscopic
microscopic
scale.
demonstrate
for
description
degenerate
processes
as
generation,
multidimensional
can
be
replaced
with
a
reduced
two-dimensional
-matrix.
possessing
specific
point
group
symmetries,
selection
rules
determining
transformation
simplified
substantially
expressed
compact
form.
apply
developed
approach
analyze
chiral
various
including
rotational,
inversion,
in-plane
mirror,
out-of-plane
mirror
symmetries.
For
each
those
we
confirm
results
analysis
full-wave
numerical
calculations.
believe
our
provide
new
paradigm
engineering
which
may
find
applications
active
optics,
biosensing,
quantum
information
processing.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 8, 2024
Nonlinear
nanophotonic
devices
have
shown
great
potential
for
on-chip
information
processing,
quantum
source,
3D
microfabrication,
greatly
promoting
the
developments
of
integrated
optics,
science,
nanoscience
and
technologies,
etc.
To
promote
applications
nonlinear
nanodevices,
improving
efficiency,
expanding
spectra
region
response
reducing
device
thickness
are
three
key
issues.
Herein,
this
study
focuses
on
effect
third-harmonic
generation
(THG),
present
a
thin
Si
meta-sructure
to
improve
THG
efficiency
in
ultraviolet
(UV)
region.
The
measured
is
up
10
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(34), P. 10577 - 10582
Published: Aug. 16, 2024
Nonlinear
chiral
photonics
explores
the
nonlinear
response
of
structures,
and
it
offers
a
pathway
to
novel
optical
functionalities
not
accessible
through
linear
or
achiral
systems.
Here
we
present
first
application
nanostructured
van
der
Waals
materials
photonics.
We
demonstrate
3
orders
magnitude
enhancement
third-harmonic
generation
from
hBN
metasurfaces
driven
by
quasi-bound
states
in
continuum
accompanied
strong
circular
dichroism
at
resonances.
This
platform
for
metaphotonics
can
be
employed
achieving
large
combined
with
high-efficiency
harmonic
broad
frequency
range.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(21), P. 6369 - 6375
Published: May 16, 2024
Optical
chirality,
which
plays
important
roles
in
liquid
crystal
display
and
biological
chemical
detection,
has
been
attracting
scientists'
attention
due
to
its
potential
applications
optical
information
processing.
Usually,
the
chiral
response
of
natural
molecules
is
very
weak.
However,
emergence
metasurfaces
offers
a
promising
solution
solve
this
issue.
By
judiciously
designing
geometry
meta-atoms,
we
have
realized
strong
circular
dichroism
(CD)
both
linear
nonlinear
regimes.
tuning
CD
with
metasurface
remains
challenging.
Here,
propose
twist-angle-controlled
effect
by
using
second-harmonic
generation
process
on
gold–crystal
hybrid
metasurface.
The
waves
can
be
tuned
well
controlling
twist
angle
between
two
constituent
materials.
proposed
may
open
new
avenues
for
developing
ultracompact
multifunctional
devices.
