As
a
kind
of
non-contact
displacement
sensor
modulated
by
wavelength,
spectral
confocal
microscopy
system
has
high
measurement
accuracy
and
is
insensitive
to
object
tilt
surface
texture,
strong
anti-stray
light
ability,
which
makes
it
become
hotspot
current
research.
The
traditional
uses
wide-spectrum
source
illuminate
the
pinhole
dispersion
objective
lens
generate
on
one
side
measured
object.
focuses
different
wavelengths
at
positions
optical
axis,
converts
information
into
wavelength
information,
detects
reflected
CCD
industrial
camera
or
spectrometer
determine
peak
focused
surface,
Thus,
axial
distance
be
obtained.
In
this
paper,
based
analysis
microscopic
system,
linear
was
designed.
3.228mm
achieved
in
range
450nm
650nm,
determination
coefficient
between
greater
than
R2=0.9859.On
basis,
dual-optical
path
detection
structure
edge
By
adding
three
impurity
filters
filter
stray
except
target
results
show
that
new
sensitivity,
small
anti-interference
ability.
Optics Express,
Journal Year:
2019,
Volume and Issue:
27(16), P. 22737 - 22737
Published: July 25, 2019
Characterization
of
the
displacement
response
is
critical
for
accurate
chromatic
confocal
measurement.
Current
characterization
methods
usually
provide
a
linear
or
polynomial
relationship
between
extracted
peak
wavelengths
spectral
signal
and
displacement.
However,
these
are
susceptible
to
errors
in
extraction
algorithms
selected
model.
In
this
paper,
we
propose
hybrid
radial
basis
function
network
method
characterise
response.
With
method,
wavelength
firstly
with
state-of-art
algorithm,
following
which,
higher-accuracy
dispersion
model
applied
determine
displacement-wavelength
relationship.
Lastly,
optimized
mapping
signals
residual
fitting
Using
experimental
tests,
show
that
significantly
improves
measurement
accuracy,
when
compared
existing
characterizing
methods.
Applied Optics,
Journal Year:
2021,
Volume and Issue:
60(10), P. 2898 - 2898
Published: March 10, 2021
A
vison
chromatic
confocal
sensor
used
to
monitor
the
location
of
a
measured
point
is
proposed
and
experimentally
verified.
To
induce
aberration
sensor,
geometrical
phase
lens
adopted
also
as
beam
splitter.
Near
lens,
focused
for
diverging
imaging
specimen.
In
experiment,
performance
system
was
verified
with
regard
distance
sensing
capability
monitoring
points.
The
measuring
range
approximately
10
mm,
repeatability
0.4
µm
when
75
mm
focal
length
used.
Applied Sciences,
Journal Year:
2019,
Volume and Issue:
9(19), P. 4084 - 4084
Published: Sept. 30, 2019
An
intentional
investigation
on
the
thermal
stability
of
a
mode-locked
femtosecond
laser
chromatic
confocal
probe,
which
is
critical
issue
for
probe
to
be
applied
long-term
displacement
measurement
or
surface
profile
requiring
long-time
scanning,
carried
out.
At
first,
instability
first
prototype
setup
evaluated
in
experiments
where
existence
considerably
large
confirmed.
Then
possible
reasons
are
analyzed
quantitatively,
such
as
refractive
index
lens
and
expansion
mechanical
jigs
employed
probe.
It
verified
that
most
caused
by
For
improvement
it
necessary
employ
low
material
shorten
optical
path
length
beam.
Based
analysis
result,
second
newly
designed
constructed.
The
improved
through
theoretical
calculations
experiments.
Micromachines,
Journal Year:
2019,
Volume and Issue:
10(12), P. 821 - 821
Published: Nov. 27, 2019
With
the
rise
of
nanoscience
and
nanotechnologies,
especially
continuous
deepening
research
on
low-dimensional
materials
structures,
various
kinds
light-emitting
devices
based
nanometer-structured
are
gradually
becoming
natural
candidates
for
next
generation
advanced
optoelectronic
with
improved
performance
through
engineering
their
interface/surface
properties.
As
dimensions
scaled
down
to
nanoscale,
plentitude
surface/interface
properties
is
one
key
factors
dominating
device
performance.
In
this
paper,
firstly,
generation,
classification,
influence
states
nanometer
optical
will
be
given
theoretically.
Secondly,
relationship
between
diode
investigated,
related
physical
mechanisms
revealed
by
introducing
classic
examples.
Especially,
how
improve
diodes
using
such
as
purification,
quantum
dots
(QDs)-emitting
layer,
surface
ligands,
optimization
architecture,
so
summarized.
Finally,
we
explore
main
influencing
actors
breakthroughs
current
future
applications
nanostructured
devices.
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
124(15)
Published: April 8, 2024
In
this
Letter,
dynamic
nano-thermal
expansion
images
of
reflective
mirrors
from
high-intensity
incident
laser
beams
were
observed
in
situ.
The
inspections
are
based
on
rapid
3D
surface
morphology
changes
the
surfaces,
captured
by
a
Chromatic
Confocal
Microscope
with
Nanoscale
Sensitivity
(CCMNS).
Nano-expansions
two
types
coatings
studied:
E02
dielectric
coating
(coating
1)
and
graphene-on-E02
complex
film
2),
both
applied
to
same
fused
silica
substrate.
superior
thermal
dissipation
properties
2,
including
enhanced
heat
dissipation,
suppressed
wavefront
distortion,
its
unique
negative
coefficient,
observed.
addition
studying
effects
graphene
coating,
CCMNS
demonstrates
an
accurate
efficient
approach
for
evaluating
mirrors.
Moreover,
proposed
methodology
possesses
enormous
potential
across
various
fields,
ranging
estimating
photonic
elements
dealing
physical
conductivity
measurements.
In
contrast
to
conventional
optical
systems,
which
are
optimized
for
wavelength-independent
imaging,
hyperchromats
aim
strongly
wavelength-dependent
focal
lengths.
this
contribution,
the
design
parameters
of
hyperchromatic
two-lens
systems
were
derived
that
provide
strong
axial
color
splitting
expressed
by
extremely
low
equivalent
Abbe
numbers.
These
have
been
investigated
compositions
either
pure
refractive
or
all
diffractive
lenses,
as
well
hybrid
configurations
thereof.
First,
lens
doublets
made
cemented
elements
considered
and
variables
affecting
number
system
investigated.
particular,
influence
lengths
individual
lenses
numbers
selected
materials
taken
into
account.
The
best
parameter-sets
determined
paraxial
numerical
simulations
different
configurations.
To
ensure
a
simple
implementation,
especially
avoid
exotic
potentially
harmful
materials,
only
readily
available
inorganic
standard
glasses
considered.
next
phase
investigation
an
air
gap
was
inserted
between
two
is
additional
parameter
on
number.
Following
considerations,
transferred
non-paraxial
domain
refined
using
software,
also
taking
aberrations
further
reduce
achievable
numbers,
aspherical
surface
introduced
compensate
spherical
aberrations.
Finally,
2.4
achieved,
corresponds
12%
smallest
materials.
This
result
even
surpassed
hyperchromat,
resulting
in
extraordinary
minimum
-0.6
more
than
five
times
smaller
lenses.
Applied Physics Letters,
Journal Year:
2020,
Volume and Issue:
116(21)
Published: May 26, 2020
This
work
describes
non-invasive
observations
of
dynamic
thermal
lensing
in
an
end-pumped
Nd:YVO4
laser.
Measurements
were
obtained
with
a
nanoscale
optical
ruler
created
using
chromatic
aberrations,
pinholes,
dispersive
gratings,
and
position-sensitive
detectors.
study
reports
on
variations
thermally
induced
oscillations
underdamping
behavior
the
regime
high
pump
power.
Dynamic
data
related
to
can
be
used
balance
between
driving
forces
(pumping
stresses)
damping
losses
(cooling
output
coupling).
The
nature
proposed
scheme
along
its
sub-100-nm
axial
resolution,
sub-millisecond
time
simple
configuration
makes
it
widely
applicable
for
studying
heat-related
phenomena
within
laser
crystals.
preliminary
results
show
that
such
methods
could
detect
deformations
integrated
circuits,
high-power
optoelectronic
devices,
devices
illumination.
