Advances in Physics X,
Journal Year:
2024,
Volume and Issue:
9(1)
Published: March 12, 2024
The
lithium
niobate
on
insulator
devices
confine
the
light
field
to
submicron
size
in
monocrystalline
niobate,
achieve
ultra-strong
electro-optical
interaction
and
nonlinear
optical
interaction,
thus
extend
frontiers
of
photonic
research
past
decade.
Such
are
manufactured
using
nano-fabrication
technology
over
thin-film
wafer,
which
usually
stands
a
silica
layer
above
substrate
material,
including
low-loss
waveguides,
modulators,
domain
engineered
structures,
high-Q
microring
resonators
electrical
filters
etc.,
lead
breakthroughs
communication,
microwave
photonics
quantum
integration.
ACS Photonics,
Journal Year:
2024,
Volume and Issue:
11(5), P. 2123 - 2130
Published: April 25, 2024
Waveguide-integrated
on-chip
meta-optics
exhibit
a
promising
platform
for
achieving
high-performance
and
compact
optical
display
devices.
However,
heading
toward
advanced
wearable
smart
technology,
its
broad
implementation
is
critically
restricted
by
the
lack
of
practical
active
tuning
capability.
Despite
previous
endeavors,
still
face
crucial
challenges
in
any
arbitrary
vectorial
wavefront
with
dynamic
switchable
ability.
Here,
liquid
crystal
(LC)-driven
metasurface
integrated
on
waveguide
proposed
demonstrated
augmented
reality
(AR)
meta-holograms.
By
engineering
meta-diatoms
at
nanoscale,
simultaneous
modulation
polarization
phase
out-coupling
lightwave
can
be
achieved
up
to
nine-channel
fully
polarized
As
proof
concept,
combination
an
electrical-driven
LC
platform,
actively
switch
holographic
images
floating
actual-world
scene
real-time
as
AR
meta-displays.
Moreover,
owing
propagation
scheme,
projected
holograms
are
uniquely
free
from
zero-order
diffraction
interference.
It
envisioned
that
such
meta-displays
allow
miniaturized
integration
promise
potential
applications
intelligent
displays,
multiplexing
information
storage/encryption,
next-generation
displays.
Advanced Photonics,
Journal Year:
2024,
Volume and Issue:
6(01)
Published: Feb. 2, 2024
Achieving
spatiotemporal
control
of
light
at
high
speeds
presents
immense
possibilities
for
various
applications
in
communication,
computation,
metrology,
and
sensing.
The
integration
subwavelength
metasurfaces
optical
waveguides
offers
a
promising
approach
to
manipulate
across
multiple
degrees
freedom
speed
compact
photonic
integrated
circuit
(PIC)
devices.
Here,
we
demonstrate
gigahertz-rate-switchable
wavefront
shaping
by
integrating
metasurface,
lithium
niobate
on
insulator
waveguides,
electrodes
within
PIC
device.
As
proofs
concept,
showcase
the
generation
focus
beam
with
reconfigurable
arbitrary
polarizations,
switchable
focusing
lateral
focal
positions
length,
orbital
angular
momentum
beams
as
well
Bessel
beams.
Our
measurements
indicate
modulation
up
gigahertz
rate.
This
platform
versatile
efficient
means
controlling
field
system,
paving
way
potential
sensing,
imaging.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(6), P. 2063 - 2070
Published: Feb. 1, 2024
On-chip
integrated
meta-optics
promise
to
achieve
high-performance
and
compact
photonic
devices.
To
arbitrarily
engineer
the
optical
trajectory
along
propagation
path
in
an
on-chip
scheme
is
of
significance
fundamental
physics
various
emerging
applications.
Here,
we
experimentally
demonstrate
metasurface
on
a
waveguide
enable
predefined
arbitrary
trajectories
visible
regime.
By
transformation
transverse
phase
generate
longitudinal
mapping,
guided
waves
are
extracted
molded
into
any
different
(parabola,
hyperbola,
cosine).
More
intriguingly,
polarization
states
with
variation
also
successfully
imparted
trajectory.
Owing
scheme,
uniquely
free
from
zero-order
diffraction
interference,
naturally
having
higher
signal-to-noise
ratio
beyond
conventional
free-space
forms.
Overall,
such
engineering
allows
for
miniaturized
integration
can
find
paths
potential
applications
complex
manipulation,
advanced
laser
fabrication,
microscopic
imaging.
ACS Photonics,
Journal Year:
2024,
Volume and Issue:
11(3), P. 1311 - 1317
Published: March 8, 2024
On-chip
integrated
meta-optics
hold
great
promise
in
creating
high-performance
and
ultracompact
optical
display
devices.
Although
previous
on-chip
metasurfaces
for
meta-display
have
predominantly
enabled
binary-image
near-/far-field
exhibition
functionalities,
this
remains
a
challenge
has
not
been
fully
explored
to
induce
multiple
intensity
levels
meticulous
grayscale
images
an
scheme.
Here,
we
propose
experimentally
demonstrate
practical
approach
embed
high-resolution
image
into
metasurface
on
waveguide
the
visible
regime.
By
employing
meta-diatom
interference
at
nanoscale,
continuous
of
local
scattering
can
be
modulated
out-coupling
lightwave
create
(pixel
size
440
×
nm2)
broadband
display.
Moreover,
directional-selective
dual-channel
displays
are
further
expanded
by
spatially
hybridizing
interferences
along
both
x-/y-directions
jointly
storing
two
single
pattern.
Owing
propagation
scheme,
captured
with
high
fidelity
enjoys
signal-to-noise
ratio
large
dynamic
range
uniquely
due
zeroth-order
diffraction
being
interference-free.
We
envision
that
proposed
driven
guided
wave
allows
their
miniaturized
integration
promises
high-density
information
storage/encryption,
next-generation
high-quality
miniature
displays,
future
virtual/augmented
reality
functionalities.
PhotoniX,
Journal Year:
2024,
Volume and Issue:
5(1)
Published: Oct. 3, 2024
Abstract
Over
the
past
few
decades,
metasurfaces
have
revolutionized
conventional
bulky
optics
by
providing
an
effective
approach
to
manipulate
optical
waves
at
subwavelength
scale.
This
advancement
holds
great
potential
for
compact,
multifunctional,
and
reconfigurable
devices.
Notably,
constructed
with
anisotropic
nanostructures
exhibited
remarkable
capability
in
manipulating
polarization
state
of
waves.
Furthermore,
they
can
be
employed
achieve
independent
control
amplitude
phase
different
channels.
has
garnered
significant
attention
from
photonics
community
due
its
unprecedented
polarization-selective
-multiplexed
wave
manipulation,
offering
versatile
applications
imaging,
communication,
detection.
paper
reviews
design
principles,
representative
works,
recent
advancements
detection,
as
well
manipulation.
Personal
insights
into
further
developments
this
research
area
are
provided.
ACS Photonics,
Journal Year:
2024,
Volume and Issue:
11(4), P. 1724 - 1733
Published: March 30, 2024
Metasurfaces
have
outstanding
capabilities
in
manipulating
light,
enabling
functions
such
as
focusing,
vortex
beam
generation,
and
holography.
Such
versatile
light
manipulation,
initially
studied
free-space
optics,
has
recently
been
explored
integrated
photonics,
with
control
waveguides.
The
ability
to
achieve
multifunctional
multiplexing
stands
is
a
significant
advantage
of
metasurfaces,
investigating
metasurfaces
capable
simultaneously
accommodating
guided
waves
holds
the
potential
enhance
information
capacity
offer
extensive
application
possibilities.
However,
research
this
particular
domain
limited,
achieving
independent
these
two
incident
modes
without
introducing
wavelength-dependent
degrees
freedom
remains
challenging
frontier.
To
solve
problem,
we
combine
detour
phase
resonant
altogether
into
on-chip
for
first
time,
which
provides
extra
both
on-ship
channels.
We
propose
experimentally
demonstrate
novel
design
an
metasurface
that
enables
need
additional
wavelength-related
variables.
By
controlling
polarization
direction
designed
device
can
record-high
six-channel
hologram
image
display.
The
secure
storage
and
transmission
of
information
are
core
measures
that
ensure
data
security.
Within
intricate
landscapes,
reconfigurable
encryption
mechanisms
serve
as
robust
defenses
against
potential
breaches
encrypted
data.
Here,
we
propose
a
visual
secret
sharing
(VSS)
strategy
leverages
the
capabilities
optical
metasurfaces
exhibits
dual-channel
secondary
scheme.
This
method
employs
three
shared
keys
(SKs)
hidden
in
near-field
spin-decoupled
far-field
channels
metasurface
to
perform
initial
encryption,
enabling
decryption
two
distinct
information.
Subsequently,
leveraging
clues
from
process,
SKs
channels,
conjunction
with
corresponding
codebook,
can
achieve
encryption.
As
proof
concept,
conduct
experiments
decrypt
first-time
is
reconfigurable.
enhanced
not
only
improves
security
parallel
capacity
but
also
offers
repetitive
dynamic
without
updating
hardware.
