Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 15, 2024
Abstract
The
recent
discovery
that
linearly
polarized
light
with
a
helical
wavefront
can
exhibit
vortex
dichroism
(also
referred
to
as
dichroism)
has
opened
up
new
horizons
in
chiroptical
spectroscopy
structured
chiral
light.
Recent
experiments
have
now
pushed
optical
activity
beams
into
the
regime
of
nonlinear
optics.
Here
theory
two‐photon
absorption
(TPA)
focused
vortices
by
molecules:
(NVD)
is
presented.
It
discovered
highly
distinct
features
arise
case
TPA
beams,
including
ability
probe
molecular
structure
not
accessible
current
methods
and
differential
rate
significantly
influenced
orientation
state
linear
polarization.
This
study
provides
strong
evidence
combining
improved
routes
studying
chirality.
Light Science & Applications,
Год журнала:
2025,
Номер
14(1)
Опубликована: Янв. 1, 2025
Optical
metrology
is
a
well-established
subject,
dating
back
to
early
interferometry
techniques
utilizing
light's
linear
momentum
through
fringes.
In
recent
years,
significant
interest
has
arisen
in
using
vortex
light
with
orbital
angular
(OAM),
where
the
phase
twists
around
singular
space
or
time.
This
expanded
metrology's
boundaries
encompass
highly
sensitive
chiral
interactions
between
and
matter,
three-dimensional
motion
detection
via
rotational
Doppler
effects,
modal
approaches
surpassing
resolution
limit
for
improved
profiling
quantification.
The
intricate
structure
of
light,
combined
integration
artificial
intelligence
into
optical
metrology,
unlocks
new
paradigms
expanding
measurement
frameworks
additional
degrees
freedom,
offering
potential
more
efficient
accurate
sensing
metrological
advancements.
review
aims
provide
comprehensive
overview
advances
future
trends
structured
specifically
focusing
on
how
beams
revolutionized
remote
sensing,
transitioning
from
classical
quantum
approaches.
Applied Physics B,
Год журнала:
2024,
Номер
130(9)
Опубликована: Авг. 29, 2024
Computational
methods
have
been
established
as
cornerstones
in
optical
imaging
and
holography
recent
years.
Every
year,
the
dependence
of
on
computational
is
increasing
significantly
to
extent
that
components
are
being
completely
efficiently
replaced
with
at
low
cost.
This
roadmap
reviews
current
scenario
four
major
areas
namely
incoherent
digital
holography,
quantitative
phase
imaging,
through
scattering
layers,
super-resolution
imaging.
In
addition
registering
perspectives
modern-day
architects
above
research
areas,
also
reports
some
latest
studies
topic.
codes
pseudocodes
presented
for
a
plug-and-play
fashion
readers
not
only
read
understand
but
practice
algorithms
their
data.
We
believe
this
will
be
valuable
tool
analyzing
trends
predict
prepare
future
holography.
Advanced Materials Technologies,
Год журнала:
2024,
Номер
9(8)
Опубликована: Март 8, 2024
Abstract
Upon
systematic
studies
of
femtosecond‐laser
processing
monocrystalline
Si
in
oxidation‐preventing
methanol,
it
is
shown
that
the
electromagnetic
processes
dominating
at
initial
steps
progressive
morphology
evolution
define
onset
hydrodynamic
and
upon
subsequent
multi‐pulse
exposure.
Under
promoted
exposure
quasi‐regular
subwavelength
laser‐induced
periodic
surface
structures
(LIPSSs)
are
justified
to
evolve
through
template‐assisted
development
Rayleigh‐Plateau
instability
molten
ridges
forming
patterns
with
a
supra‐wavelength
periodicity
preferential
alignment
along
polarization
direction
incident
light.
Subsequent
promotes
fusion‐assisted
rearrangement
resulting
spiky
random
orientation,
yet
constant
inter‐structure
distance
correlated
LIPSS
periodicity.
Along
insight
onto
physical
picture
driving
nanostructure
formation,
this
experiments
also
demonstrated
can
be
tailored
by
intensity/polarization
distribution
laser
beam
allowing
on‐demand
nanotexturing
diverse
hierarchical
morphologies
exhibiting
reduced
reflectivity
visible
shortwave‐IR
wavelengths.
Finally,
practical
attractiveness
suggested
approach
for
improving
near‐IR
photoresponse
expanding
operation
spectral
range
vertical
p‐n
junction
photodetector
operating
under
room
temperature
zero‐bias
conditions
via
single‐step
annealing‐free
nanopatterning
highlighted.
Advanced Materials Technologies,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 31, 2024
Abstract
Diffractive
optical
elements
(DOEs)
represent
a
revolutionary
advancement
in
modern
optics,
offering
unparalleled
versatility
and
efficiency
various
applications.
Their
significance
lies
their
ability
to
manipulate
light
waves
with
intricate
patterns,
enabling
functionalities
beyond
what
traditional
refractive
optics
can
achieve.
DOEs
find
widespread
use
fields
such
as
laser
beam
shaping,
holography,
communications,
imaging
systems.
By
precisely
controlling
the
phase
amplitude
of
light,
generate
complex
structures,
correct
aberrations,
enhance
performance
Moreover,
compact
size,
lightweight
nature,
potential
for
mass
production
make
them
indispensable
designing
efficient
devices
diverse
industrial
scientific
From
improving
systems
innovative
display
technologies,
continue
drive
advancements
promising
even
more
exciting
possibilities
future.
In
this
review,
critical
importance
is
illuminated
explore
profound
implications
contemporary
era.
Laser & Photonics Review,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 27, 2025
Abstract
The
ability
to
create
surface
structures
with
precisely
controlled
chirality
remains
a
major
challenge
in
laser‐matter
interaction
experiments.
In
this
work,
the
of
vortex
laser
beams,
characterized
by
spiral
polarization
patterns
and
twisted
wavefronts,
rough
metallic
surfaces
order
is
theoretically
studied.
Using
numerical
simulations
based
on
finite‐difference
time‐domain
method,
how
spin
orbital
angular
momenta
influence
inhomogeneous
energy
absorption
at
investigated
optical
forces
that
can
drive
topographic
reorganization
are
generated.
How
different
structured
light
fields
intricate
chiral
features
material
shown.
crucial
role
spatial
inhomogeneity
field
generation
asymmetric
torque
directly
affect
dynamics
emphasized.
electromagnetic
show
beams
be
used
structures,
expanding
knowledge
laser‐generated
periodic
opening
up
new
possibilities
for
engineering.
Opto-Electronic Science,
Год журнала:
2023,
Номер
2(7), С. 230014 - 230014
Опубликована: Янв. 1, 2023
Hall
effect
of
light
is
a
result
symmetry
breaking
in
spin
and/or
orbital
angular
momentum
(OAM)
possessing
optical
system
and
caused
by
e.g.
refractive
index
gradient/interface
between
media
or
focusing
spatially
asymmetrical
beam,
similar
to
the
electric
field
for
electrons.
The
(AM)
conservation
law
ensuing
asymmetric
dictates
redistribution
momentum,
manifested
spin-orbit,
orbit-orbit,
orbit-spin
conversions
reorganization,
i.e.
spin-orbit
orbit-orbit
interaction.
This
AM
restructuring
turn
requires
shifts
barycenter
light.
In
present
study
we
show,
both
analytically
numerical
simulation,
how
different
components
are
displaced
upon
tight
an
beam
having
OAM
spin.
relation
shifts/redistribution
presented
too.
Moreover,
experimentally
demonstrate,
first
time,
best
our
knowledge,
free
space.
achieved
using
azopolymers
as
detecting
longitudinal
orzcomponent
electrical
These
findings
elucidate
may
broaden
spectrum
its
applications.
Sensors,
Год журнала:
2024,
Номер
24(4), С. 1166 - 1166
Опубликована: Фев. 10, 2024
Photosensitive
materials
are
widely
used
for
the
direct
fabrication
of
surface
relief
gratings
(SRGs)
without
selective
etching
material.
It
is
known
that
interferometric
approach
makes
it
possible
to
fabricate
SRGs
with
submicron
and
even
subwavelength
periods.
However,
change
period
written
SRGs,
necessary
convergence
angle,
shift
a
sample,
readjust
setup.
Recently,
was
shown
structured
laser
beams
predetermined,
periodically
modulated
polarization
distributions
can
also
be
SRGs.
A
beam
desired
distribution
formed
just
one
polarizing
optical
element—for
example,
so-called
depolarizer,
patterned
micro-retarder
array.
The
use
such
stacked
elements
directly
control
modulation
generated
beam.
We
show
this
allows
Moreover,
addition
q-plates,
effectively
generate
cylindrical
vector
singularities,
efficient
formation
fork
(FPGs)
higher-order
fork-shaped
Full
parameters
FPGs
possible.
demonstrate
higher
orders
(up
12)
by
only
adding
first-
second-order
q-plates
half-wave
plates
depolarizers.
In
work,
we
numerically
experimentally
study
various
types
using
these
significant
potential
method
processing
photosensitive
materials,
which
often
serve
as
sensors.
Nanomaterials,
Год журнала:
2025,
Номер
15(3), С. 189 - 189
Опубликована: Янв. 25, 2025
Vortex
dichroism
in
chiral
metamaterials
is
of
great
significance
to
the
study
photoelectric
detection,
optical
communication,
and
interaction
between
light
matter.
Here
we
propose
a
compact
structure
composed
two
elliptical
SiO2
rods
covered
with
Au
film
on
substrate
achieve
significant
vortex-dichroism
effect.
Such
has
different
responses
Laguerre-Gaussian
beam
carrying
opposite-orbital
angular
momentum,
resulting
giant
vortex
dichroism.
The
influences
various
structural
parameters
are
analyzed,
optimal
obtained
realize
remarkable
about
58.5%.
simplicity
VD
effect
proposed
make
it
promising
candidate
for
advancing
applications
such
as
communication
sensing.
