Nanophotonics,
Год журнала:
2023,
Номер
12(13), С. 2295 - 2315
Опубликована: Фев. 23, 2023
Unlike
traditional
optical
components,
which
rely
on
the
gradual
accumulation
of
light
along
path
over
a
distance
much
larger
than
wavelength
to
form
wavefront,
metasurfaces
manipulate
field
properties
thickness
by
specially
arranging
various
meta-atoms.
Due
ease
integration
and
compact
planar
structure,
play
key
role
in
manipulations.
Here,
we
review
recent
advances
multi-dimensions,
including
wavelength,
polarization,
orbital
angular
momentum(OAM),
response.
Progress
these
fields
has
brought
new
applications
areas
such
as
imaging,
display,
communication,
information
encryption,
etc.
Finally,
also
discuss
challenges
prospects
applications.
Laser & Photonics Review,
Год журнала:
2023,
Номер
18(2)
Опубликована: Окт. 25, 2023
Abstract
The
all‐optical
diffractive
deep
neural
networks
(D
2
NNs)
framework
as
a
hardware
platform
is
demonstrated
to
implement
various
advanced
functional
meta‐devices
with
high
parallelism
and
processing
speed.
However,
the
design
methodology
merging
trainable
polarization
modulation
neurons
into
D
NNs,
which
potentially
possess
higher
integration
more
task‐loading
capacity,
not
yet
fully
explored.
Here,
matrix
(M‐D
are
proposed
deploy
polarization‐sensitive
Jones
metasurfaces
multiplexing
perform
sophisticated
inference
tasks
well
inverse
designs
for
meta‐devices.
Three
functionalities
implemented
by
M‐D
that
is,
task‐capacity
classification,
non‐interleaved
high‐efficiency
eight‐channel
regulation,
custom‐polarization
information
cryptographic
multiplexing.
NNs
provide
new
strategy
merge
electromagnetic
optical
field
modulators
metasurfaces,
may
drive
evolution
of
toward
multi‐task
devices.
Opto-Electronic Science,
Год журнала:
2023,
Номер
2(8), С. 230025 - 230025
Опубликована: Янв. 1, 2023
Virtual
reality
(VR)
and
augmented
(AR)
are
revolutionizing
our
lives.
Near-eye
displays
crucial
technologies
for
VR
AR.
Despite
the
rapid
advances
in
near-eye
display
technologies,
there
still
challenges
such
as
large
field
of
view,
high
resolution,
image
quality,
natural
free
3D
effect,
compact
form
factor.
Great
efforts
have
been
devoted
to
striking
a
balance
between
visual
performance
device
compactness.
While
traditional
optics
nearing
their
limitations
addressing
these
challenges,
ultra-thin
metasurface
optics,
with
light-modulating
capabilities,
may
present
promising
solution.
In
this
review,
we
first
introduce
AR
displays,
then
briefly
explain
working
principles
metasurfaces,
review
recent
developments
devices
geared
toward
applications,
delved
into
several
advanced
based
on
finally
discuss
about
remaining
future
perspectives
associated
metasurfaces
applications.
Light Science & Applications,
Год журнала:
2023,
Номер
12(1)
Опубликована: Май 4, 2023
Objects
with
different
shapes,
materials
and
temperatures
can
emit
distinct
polarizations
spectral
information
in
mid-infrared
band,
which
provides
a
unique
signature
the
transparent
window
for
object
identification.
However,
crosstalk
among
various
polarization
wavelength
channels
prevents
from
accurate
detections
at
high
signal-to-noise
ratio.
Here,
we
report
full-polarization
metasurfaces
to
break
inherent
eigen-polarization
constraint
over
wavelengths
mid-infrared.
This
recipe
enables
select
arbitrary
orthogonal
basis
individual
independently,
therefore
alleviating
efficiency
degradation.
A
six-channel
all-silicon
metasurface
is
specifically
presented
project
focused
light
positions
three
wavelengths,
each
pair
of
arbitrarily
chosen
polarizations.
An
isolation
ratio
117
between
neighboring
experimentally
recorded,
exhibiting
detection
sensitivity
one
order
magnitude
higher
than
existing
infrared
detectors.
Remarkably,
aspect
~30
our
meta-structures
manufactured
by
deep
silicon
etching
technology
temperature
-150
°C
guarantees
large
precise
phase
dispersion
control
broadband
3
4.5
μm.
We
believe
results
would
benefit
noise-immune
remote
sensing
space-to-ground
communications.
Applied Physics Letters,
Год журнала:
2024,
Номер
124(26)
Опубликована: Июнь 24, 2024
Here
we
present
a
roadmap
on
Photonic
metasurfaces.
This
document
consists
of
number
perspective
articles
different
applications,
challenge
areas
or
technologies
underlying
photonic
Each
will
introduce
the
topic,
state
art
as
well
give
an
insight
into
future
direction
subfield.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Авг. 6, 2024
Polarization
transformation
is
at
the
foundation
of
modern
applications
in
photonics
and
quantum
optics.
Notwithstanding
their
applicative
interests,
basic
theoretical
experimental
efforts
are
still
needed
to
exploit
full
potential
polarization
Here,
we
reveal
that
coherent
superposition
two
non-orthogonal
eigen-states
Jones
matrix
can
improve
drastically
efficiency
arbitrary
with
respect
classical
orthogonal
By
exploiting
metasurface
stacking
twisted
configuration,
have
implemented
a
powerful
termed
"non-orthogonal
metasurfaces",
experimentally
demonstrated
input-output
modulation
reaching
nearly
100%
transmission
broadband
angle-insensitive
manner.
Additionally,
proposed
routing
methodology
project
independent
phase
holograms
quadruplex
circular
components.
Our
results
outline
paradigm
achieve
extremely
efficient
optics,
multiplexing
for
communication
information
encryption
microwave
optical
frequencies.
The
authors
showcase
general
method
engineer
unity,
taking
advantage
eigen-formalism
circumvent
limitation
conventional
Advanced Materials,
Год журнала:
2024,
Номер
36(24)
Опубликована: Март 8, 2024
Metasurfaces
are
flat
arrays
of
nanostructures
that
allow
exquisite
control
phase
and
amplitude
incident
light.
Although
metasurfaces
offer
new
active
element
for
both
fundamental
science
applications,
the
challenge
still
remains
to
overcome
their
low
information
capacity
passive
nature.
Here,
by
integrating
an
inverse-designed-metasurface
with
oblique
helicoidal
cholesteric
liquid
crystal
(Ch
Abstract
Vectorial
optics
with
fine
inhomogeneous
polarization
control
are
highly
desired.
Metasurfaces
have
been
captivated
a
promising
candidate,
but
their
static
post-fabrication
geometry
largely
limits
the
dynamic
tunability.
Liquid
crystal
(LC)
is
usually
employed
as
an
additional
index-changing
layer
together
metasurfaces.
Unfortunately,
most
of
reported
LCs
only
impart
varying
uniform
phase
on
top
that
from
metasurface,
which
we
term
“scalar”
LC
optics.
Here,
pixelate
single-layer
to
display
versatile
and
tunable
vectorial
holography,
in
amplitude
could
be
arbitrarily
independently
controlled
at
spatial
positions.
Furthermore,
subtle
LC-holography
highlights
broadband
electrically-switchable
functionalities.
Our
holography
reveals
significant
opportunities
for
advanced
cryptography,
super-resolution
imaging,
many
other
applications.
