Strong Coupling and Electromagnetically Induced Transparency in Multiple-BIC-Driven Metasurfaces
Nano Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 11, 2025
Photonic
quasi-bound
states
in
the
continuum
(quasi-BICs)
provide
an
excellent
platform
for
strong
light-matter
interactions
nanophotonics.
In
this
work,
we
numerically
and
experimentally
demonstrate
that
Si
nanorod
dimer
metasurface
offers
a
new
paradigm
realizing
multiple
wavelength-stabilized
quality-factor-tunable
quasi-BICs,
through
unique
symmetry
breaking
method
does
not
alter
volume.
A
pronounced
electromagnetically
induced
transparency
(EIT)
effect,
exhibiting
group
time
delay
of
6.7
ps,
coupling
accompanied
by
characteristic
anticrossing
Rabi
splitting
are
realized
based
on
hybridization
between
bright
mode
neighboring
quasi-BIC
within
multiresonant
metasurface.
Intriguingly,
sharp
window,
with
tunable
bandwidth
but
stable
wavelength,
is
achieved.
All
numerical
results
validated
experimental
demonstration.
Our
findings
recipe
wavelength-stabilized,
quasi-BICs
EIT-like
effect.
would
find
utility
slow
light,
quantum
storage,
nonlinear
optics.
Язык: Английский
Multispectral metasurface for visible transparency, infrared stealth, and mm-wave frequency-multiplexing
Materials & Design,
Год журнала:
2025,
Номер
unknown, С. 113903 - 113903
Опубликована: Март 1, 2025
Язык: Английский
Topological Band Engineering in q-BICs and EPs Derived from Visible Range Plasmons
Nano Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 28, 2025
Topological
photonics,
owing
to
its
band
topology,
has
substantial
potential
in
applications
such
as
quantum
computation
and
photonic
chips.
However,
attaining
flexible
control
over
topology
for
effective
light–matter
interactions
at
the
subwavelength
scale
remains
elusive.
In
this
study,
we
present
a
metal–insulator–metal
(MIM)
dimerized
grating
structure
based
on
one-dimensional
(1D)
Su–Schrieffer–Heeger
model
(SSH).
This
is
designed
tuning
optical
with
relatively
high
quality
factor
small
mode
volume.
Specifically,
by
variation
of
thickness,
topological
inversion
plasmonic
quasi-bound
states
continuum
(q-BICs)
can
be
achieved.
Moreover,
through
modulation
gain–loss
coupling
strength,
corresponding
exceptional
points
(EPs)
emerge
near
Brillouin
zone
center
(Γ
point).
Consequently,
MIM
offers
novel
approach
design
advanced
devices.
Язык: Английский
Customizing the electric field of metalens with high degrees of freedom based on neural network
Nanophotonics,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 11, 2025
Abstract
The
metasurfaces
are
able
to
flexibly
control
electromagnetic
waves.
However,
their
design
necessitates
strict
phase
matching,
which
requires
high
computational
load,
and
its
method
has
low
flexibility.
This
paper
proposes
a
novel
for
the
customization
of
electric
field
metalens
with
degrees
freedom
based
on
an
improved
Pixel
Generative
Adversarial
Network
(I-pixGAN).
I-pixGAN
can
distribution
according
customized
target
field,
constructed
this
modulate
field.
results
show
that
proposed
arbitrarily
position
focus
in
three-dimensional
space,
where
is
offset
within
one
wavelength.
Therefore,
it
not
need
strictly
follow
characteristics,
construct
unknown
realizing
highly
free
providing
new
way
operation.
promotes
development
focusing
systems,
only
improving
accuracy
but
also
enhancing
system
flexibility
promoting
automation
intelligence
optical
terahertz
systems.
Язык: Английский
Monoclinic nonlinear metasurfaces for resonant engineering of polarization states
Nanophotonics,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 22, 2025
Abstract
Polarization
is
a
fundamental
property
of
light
that
can
be
engineered
and
controlled
efficiently
with
optical
metasurfaces.
Here,
we
employ
chiral
metasurfaces
monoclinic
lattice
geometry
achiral
meta-atoms
for
resonant
engineering
polarization
states
light.
We
demonstrate,
both
theoretically
experimentally,
metasurface
convert
linearly
polarized
into
elliptically
not
only
in
the
linear
regime
but
also
nonlinear
generation
third-harmonic
field.
reveal
ellipticity
higher-harmonic
fields
depends
critically
on
angle
input
polarization,
effective
response
plays
significant
role
conversion.
Язык: Английский
Terahertz Branch Selection of Friedrich-Wintgen Bound States in the Continuum via Altering the Intra-Action of Meta-Atom
ACS Applied Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 6, 2025
Язык: Английский
Multifunctional applications of meta-fiber: A review
Optics & Laser Technology,
Год журнала:
2025,
Номер
189, С. 113176 - 113176
Опубликована: Май 14, 2025
Язык: Английский
Resonant 2D Wavefront Manipulation via Birefringent Guided‐Mode Resonances in Dielectric Phase Gradient Metasurfaces
Laser & Photonics Review,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 19, 2025
Abstract
Phase
gradient
metasurfaces
based
on
guided‐mode
resonances
have
emerged
as
a
promising
route
to
manipulate
optical
wavefronts
with
high
resolutions
in
both
spatial
and
spectral
dimensions.
However,
responses
these
resonant
generally
rely
the
coherent
interaction
among
many
adjacent
meta‐atoms
across
an
extended
region,
so
that
neighboring
varies
geometric
parameters
of
nearby
meta‐atoms,
leading
distortion
low
efficiency
wavefront
manipulation.
In
this
work,
experimental
demonstration
is
presented
dielectric
phase
enabled
by
birefringent
resonances,
which
are
utilized
realize
2D
manipulations
such
anomalous
beam
deflection,
focusing,
vortex
generation.
configuration,
two‐fold
mirror
symmetry
enables
giving
rise
efficient
cross‐polarization
conversion
complete
2
π
coverage
via
scheme
stable
interactions.
The
results
provide
effective
strategy
for
realizing
robust
coupling
effects,
facilitating
development
metasurfaces.
Язык: Английский
Tunable Vector Polarization Transformation Enabled by Meta‐Cavity
Laser & Photonics Review,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 21, 2025
Abstract
Polarization
transformation
plays
a
key
role
in
applications
of
photonics
and
quantum
optics.
Traditional
bulky
optical
components
are
inadequate
for
miniaturized
systems,
while
metasurfaces
offer
revolutionary
solution,
but
still
face
challenges
with
vector
polarization
tunability.
Here,
tunable
mechanism
is
introduced,
utilizing
bifacial
enabled
meta‐cavity.
By
adjusting
the
cavity
length
phase
modulations
to
achieve
complex
interferences
two
spin
light,
diverse
transformations
demonstrated
on
higher‐order
hybrid‐order
Poincaré
spheres.
The
results
outline
powerful
paradigm
realize
way
can
open
new
possibilities
communications,
encryption,
beyond.
Язык: Английский
Conversion of Photon Temporal Shape Using Single Gradient Metasurface
Laser & Photonics Review,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 4, 2025
Abstract
By
applying
phase
modulation
across
different
frequencies,
metasurfaces
possess
the
ability
to
manipulate
temporal
dimension
of
photons
at
femtosecond
scale.
However,
there
remains
a
fundamental
challenge
shape
single
wavepacket
nanosecond
scale
by
using
metasurfaces.
Here,
it
is
proposed
that
photon
can
be
converted
through
multi‐photon
interference
on
metasurface.
selecting
appropriate
input
single‐photon
shapes
and
beam
splitting
ratio,
controllable
conversion
achieved
with
high
fidelity.
For
examples,
an
exponentially
decaying
profile
shaped
into
Gaussian
profile;
tuning
relative
time
delays
photons,
Gaussian‐shaped
transformed
or
rising
profiles
same
The
mechanism
provides
compact
way
for
solving
mismatch
issues
in
quantum
networks,
facilitating
realization
high‐fidelity
on‐chip
information
processing.
Язык: Английский