Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(12), P. 1842 - 1842
Published: June 12, 2023
Black-phosphorus-analog
lead
monoxide
(PbO),
as
a
new
emerging
2D
material,
has
rapidly
gained
popularity
in
recent
years
due
to
its
unique
optical
and
electronic
properties.
Recently,
both
theoretical
prediction
experimental
confirmation
have
revealed
that
PbO
exhibits
excellent
semiconductor
properties,
including
tunable
bandgap,
high
carrier
mobility,
photoresponse
performance,
which
is
undoubtedly
of
great
interest
explore
practical
application
variety
fields,
especially
nanophotonics.
In
this
minireview,
we
firstly
summarize
the
synthesis
nanostructures
with
different
dimensionalities,
then
highlight
progress
optoelectronics/photonics
applications
based
on
nanostructures,
present
some
personal
insights
current
challenges
future
opportunities
research
area.
It
anticipated
minireview
can
pave
way
fundamental
functional
black-phosphorus-analog
PbO-nanostructure-based
devices
meet
growing
demands
for
next-generation
systems.
Optical Fiber Technology,
Journal Year:
2024,
Volume and Issue:
83, P. 103672 - 103672
Published: Jan. 17, 2024
Authors
reported
the
generation
of
Q
-
Switched
pulses
in
an
erbium-ytterbium
co-doped
fiber
laser
using
aqueous
solution
colloidal
gold
nanorods
(GNRs)
and
Polyvinyl
Alcohol
(PVA)
as
a
saturable
absorber
(SA).
The
effect
GNRs
PVA
concentrations
on
has
been
explored.
Passive
Q-Switching
is
achieved
at
1.1
W
(1.8
A).
Pulses
with
minimum
width
9.6
µs
having
repetition
rate
21.5
kHz
maximum
energy
0.15
µJ
1.56
μm
are
obtained
for
pump
current
2.195
(3.12
Journal of Lightwave Technology,
Journal Year:
2024,
Volume and Issue:
42(13), P. 4643 - 4649
Published: Feb. 26, 2024
The
transition
dynamics
between
harmonic
mode-locking
states
in
Raman-assisted
ultralong
ring
fiber
lasers
operating
the
C-Band
are
experimentally
studied
resonators
of
up
to
5.4
km,
capable
generating
ultrashort
pulses
with
energies
order
0.6
μJ
and
durations
below
200
fs,
repetition
rates
as
low
38
kHz,
which
allow
for
real-time
monitoring
pulse
dynamics.
Output
signal
is
monitored
through
time-stretched
dispersive
Fourier
transform
technique,
confirming
expected
solitonic
behaviour
associated
quasi-lossless
extended
cavity,
dynamic
tunability
a
variety
intermediate
transient
states.
Transitions
stable
mode-locked
from
lower
higher
harmonics
shown
be
mediated
by
formation
soliton-like
mutually
attractive
pairs
that
merge
after
number
cycles.
absence
direct
path
some
modes
has
been
identified,
can
have
important
implications
system
optimization,
inform
design
tunable
operation.
Optics Express,
Journal Year:
2024,
Volume and Issue:
32(13), P. 22233 - 22233
Published: May 23, 2024
Experimental
and
numerical
study
has
been
performed
for
three
techniques
of
mode-locking
in
all-fiber
Holmium
laser.
We
have
compared
the
fundamental
repetition
rate
pulsed
generation
based
on:
nonlinear
polarization
evolution,
polymer-free
single-walled
carbon
nanotubes,
hybrid
mode-locking.
simulation
results
demonstrated
shortest
pulse
duration
maximum
spectrum
width
on
evolution:
1.3
ps,
4.2
nm
4.1
nm,
respectively.
The
self-starting
mode
this
case
can
vary
depending
external
conditions
experiment.
In
Ho-doped
fiber
laser
with
nanotubes
mode-locking,
small
modulation
depth
saturable
absorption
leads
to
a
long
time
period
stationary
single-pulse
lasing
development
(about
10
Nanomaterials,
Journal Year:
2022,
Volume and Issue:
12(13), P. 2280 - 2280
Published: July 1, 2022
As
a
member
of
the
transition
metal
nitride
material
family,
titanium
(TiN)
quantum
dots
(QDs)
have
attracted
great
attention
in
optical
and
electronic
fields
because
their
excellent
optoelectronic
properties
favorable
stability.
Herein,
TiN
QDs
were
synthesized
served
as
saturable
absorber
(SA)
for
an
ultrafast
fiber
laser.
Due
to
strong
nonlinear
absorption
characteristics
with
modulation
depth
~33%,
typical
fundamental
mode-locked
pulses
harmonics
can
be
easily
obtained
erbium-doped
laser
TiN-QD
SA.
In
addition,
at
maximum
pump
power,
harmonic
repetition
rate
~1
GHz
(164th
order)
pulse
duration
~1.45
ps
are
achieved.
far
we
know,
is
highest
using
Thus,
these
experimental
results
indicate
that
considered
promising
material,
showing
more
potential
category
optics.
Optics & Laser Technology,
Journal Year:
2023,
Volume and Issue:
166, P. 109562 - 109562
Published: June 7, 2023
A
novel
fibre
ring
laser
architecture
reliant
on
the
use
of
Raman-assisted
nonlinearity
management
over
ultralong
cavities
is
used
for
first
time
to
generate
ultrashort
pulses
in
resonators
up
25.2
km.
Using
this
approach,
stable
generation
under
200
fs
with
estimated
maximum
energies
order
μJ
and
an
ultra-low
repetition
rate
20
kHz
reported
passively
mode-locked
ultra-long
lasers
10
km,
overcoming
previous
limitations
pulse
duration
imposed
by
dispersive
effects.
The
proposed
system
operates
telecommunications
infrared
C-band,
relies
Erbium-doped
amplifier,
a
polarization-insensitive
InN-based
semiconductor
saturable
absorber
mirror
standard
telecommunication
fibres,
does
not
require
external
amplification
or
compression
stages.
Real-time
monitoring
output
signal
through
time-stretch
Fourier
transform
technique
shows
that
average
optical
spectrum
corresponds
individual
pulses.
presented
devices
constitute
new
family
ultrafast
oscillators
unique
characteristics
suited
broad
range
applications.
Photonics,
Journal Year:
2024,
Volume and Issue:
11(6), P. 552 - 552
Published: June 12, 2024
Fibre
lasers
are
distinct
in
that
their
optical
train
is
decoupled
from
the
environment,
especially
all-fibre
format.
The
attractive
side
of
this
decoupling
simplicity
maintenance
(no
need
to
align
cavity
or
keep
elements
clean),
but
flip
difficulty
one
encounters
when
trying
control
output
parameters.
components
used
laser
cavities
usually
different
those
free-space
and
require
new
approaches
control.
Essentially,
an
important
task
emerges,
i.e.,
research
development
able
adjust
parameters
(ideally
by
electronic
means)
order
tune
key
radiation—wavelength,
power,
so
on.
present
review
analyses
existing
methods
over
mode-locked
lasers.
It
further
noted
a
method
relying
on
several
independently
pumped
active
media
may
be
promising
regard.
Abstract
Artificial
saturable
absorbers
(SA)
are
nonlinear
optical
devices
widely
employed
in
mode‐locked
lasers.
Among
the
artificial
SAs
polarization
evolution
(NPE)
and
amplifying
loop
mirrors
that
can
work
either
figure‐of‐eight
(Fo8)
or
figure‐of‐nine
(Fo9)
laser
cavities.
The
NPE
technique
is
highly
sensitive
to
environmental
perturbations.
Both
Fo8
Fo9
cavities
exhibit
a
higher
stability
than
technique.
Here
recent
advances
of
cavity,
with
focus
on
pulse
formation
mechanisms
role
different
cavity
parameters
enable
ultrafast
mode‐locking
analyses
discussed.
Besides,
development
using
generate
high‐energy
rectangular
pulses
through
dissipative
soliton
resonance
noise‐like
regimes
also
reviewed.
In
conclusion,
current
issues
challenges
highlighted
recommendations
for
future
research
directions
proposed.
This
review
expected
provide
deeper
insight
into
as
next
generation
SA
interesting
structures,
features,
output
performances.
