Nano Letters,
Год журнала:
2023,
Номер
23(14), С. 6768 - 6775
Опубликована: Июнь 12, 2023
Optical
metasurfaces
supporting
localized
resonances
have
become
a
versatile
platform
for
shaping
the
wavefront
of
light,
but
their
low
quality
(Q-)
factor
modes
inevitably
modify
over
extended
momentum
and
frequency
space,
resulting
in
limited
spectral
angular
control.
In
contrast,
periodic
nonlocal
been
providing
great
flexibility
both
selectivity
with
spatial
Here,
we
introduce
multiresonant
capable
properties
light
using
several
widely
disparate
Q-factors.
contrast
to
previous
designs,
narrowband
resonant
transmission
punctuates
broadband
reflection
window
enabled
by
highly
symmetric
array,
achieving
simultaneous
filtering
mode.
Through
rationally
designed
perturbations,
realize
flat
lenses
suitable
as
compact
band-pass
imaging
devices,
ideally
suited
microscopy.
We
further
employ
modified
topology
optimization
demonstrate
high-quality-factor
metagratings
extreme
transformations
large
efficiency.
Optical
metasurfaces,
arrays
of
nanostructures
engineered
to
manipulate
light,
have
emerged
as
a
transformative
technology
in
both
research
and
industry
due
their
compact
design
exceptional
light
control
capabilities.
Their
strong
light–matter
interactions
enable
precise
wavefront
modulation,
polarization
control,
significant
near-field
enhancements.
These
unique
properties
recently
driven
application
biomedical
fields.
In
particular,
metasurfaces
led
breakthroughs
imaging
technologies,
such
achromatic
imaging,
phase
extended
depth-of-focus
imaging.
They
also
advanced
cutting-edge
biosensing
featuring
high-quality
factor
resonators
As
the
demand
for
device
miniaturization
system
integration
increases,
are
expected
play
pivotal
role
development
next-generation
devices.
this
review,
we
explore
latest
advancements
use
applications,
with
particular
focus
on
sensing.
Additionally,
discuss
future
directions
aimed
at
transforming
field
by
leveraging
full
potential
provide
compact,
high-performance
solutions
wide
range
applications.
Recent
advancements
in
photonic
bound
states
the
continuum
(BICs)
have
opened
up
exciting
new
possibilities
for
design
of
optoelectronic
devices
with
improved
performance.
In
this
perspective
article,
we
provide
an
overview
recent
progress
BICs
based
on
metamaterials
and
crystals,
focusing
both
underlying
physics
their
practical
applications.
The
first
part
article
introduces
2
different
interpretations
BICs,
far-field
interference
multipoles
near-field
analysis
topological
charges.
We
then
discuss
research
manipulating
radiation
properties
through
engineering
second
summarizes
developments
applications
including
chiral
light
vortex
beam
generation,
nonlinear
optical
frequency
conversion,
sensors,
nanolasers.
Finally,
conclude
a
discussion
potential
to
advance
terahertz
areas
such
as
generation
detection,
modulation,
sensing,
isolation.
believe
that
continued
area
will
lead
optoelectronics,
particularly
field
devices.
Abstract
Metasurfaces
can
modulate
light
with
periodically
arranged
subwavelength
scatterers,
and
they
generate
arbitrary
wavefronts.
Therefore,
be
used
to
realize
various
optical
components.
In
particular,
metasurfaces
lenses,
so-called
metalenses.
the
last
decade,
metalenses
have
been
actively
studied
developed.
this
review,
we
firstly
introduce
fundamental
principles
of
in
terms
materials,
phase
modulation
method,
design
method.
Based
on
these
principles,
functionalities
applications
consequently
realized.
Metalenses
a
much
larger
number
degrees
freedom
compared
that
existing
refractive
or
diffractive
lenses.
Thus,
afford
such
as
tunability,
high
numerical
aperture,
aberration
correction.
applied
systems
imaging
spectrometers.
Finally,
discuss
future
Graphical
Nanomaterials,
Год журнала:
2023,
Номер
13(7), С. 1235 - 1235
Опубликована: Март 30, 2023
Meta-optics
based
on
metasurfaces
that
interact
strongly
with
light
has
been
an
active
area
of
research
in
recent
years.
The
development
meta-optics
always
driven
by
human’s
pursuits
the
ultimate
miniaturization
optical
elements,
on-demand
design
and
control
beams,
processing
hidden
modalities
light.
Underpinned
meta-optical
physics,
devices
have
produced
potentially
disruptive
applications
manipulation
ultra-light
optics.
Among
them,
metalens
are
most
fundamental
prominent
meta-devices,
owing
to
their
powerful
abilities
advanced
imaging
image
processing,
novel
functionalities
manipulation.
This
review
focuses
advances
fundamentals
field
defined
excavating
new
physics
breaking
limitations
In
addition,
we
deeply
explored
metalenses
metalens-based
functionalities,
computational
processing.
We
also
provide
outlook
this
end.
Nano Letters,
Год журнала:
2023,
Номер
23(14), С. 6768 - 6775
Опубликована: Июнь 12, 2023
Optical
metasurfaces
supporting
localized
resonances
have
become
a
versatile
platform
for
shaping
the
wavefront
of
light,
but
their
low
quality
(Q-)
factor
modes
inevitably
modify
over
extended
momentum
and
frequency
space,
resulting
in
limited
spectral
angular
control.
In
contrast,
periodic
nonlocal
been
providing
great
flexibility
both
selectivity
with
spatial
Here,
we
introduce
multiresonant
capable
properties
light
using
several
widely
disparate
Q-factors.
contrast
to
previous
designs,
narrowband
resonant
transmission
punctuates
broadband
reflection
window
enabled
by
highly
symmetric
array,
achieving
simultaneous
filtering
mode.
Through
rationally
designed
perturbations,
realize
flat
lenses
suitable
as
compact
band-pass
imaging
devices,
ideally
suited
microscopy.
We
further
employ
modified
topology
optimization
demonstrate
high-quality-factor
metagratings
extreme
transformations
large
efficiency.
