Acta Physica Sinica,
Journal Year:
2024,
Volume and Issue:
73(19), P. 194201 - 194201
Published: Jan. 1, 2024
With
the
development
of
ultrafast
science
and
attosecond
laser
technology,
pump-probe
system
based
on
isolated
pulses
is
a
key
to
science,
which
will
be
used
study
electronic
dynamics
an
time-scale.
To
obtain
stable
reliable
signals,
it
necessary
ensure
ultra-stable
ultra-accurate
synchronization.
Any
timing
jitter
can
cause
signal
disperse
or
get
buryied
in
noise,
making
impossible
true
physical
mechanism.
Based
above,
delay
between
pump
pulse
probe
must
controlled
with
time
resolution.
In
this
work,
dual-layer
developed
achieve
high-precision
synchronization
locking.
that
both
layers
have
same
jitter,
we
design
adapter
secure
elements
placed
during
installation.
Timing
obtained
by
shaking
interference
fringes
through
fast
Fourier
transformation,
calculated
several
ms.
Then
error
signals
are
fed
back
PZT
stage
order
compensate
for
real-time
optical
path
drift.
Through
such
design,
time-delay
accuracy
7.64
as
15.53
realized,
linearly
related
interferometer
arm
length
ranging
from
1
m
5
m,
<i>R</i><sup>2</sup>
0.96.
Moreover,
experimental
result
8
10
fitted
above
data
less
than
3
as.
These
results
show
using
small
detection
long-arm
large
scientific
instrument,
great
significance
guiding
ther
applications
non-collinear
streaking
spectroscopy,
time-resolved
photoelectron
coherent
synthesis.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 7, 2025
Semiconductor
crystals
driven
by
strong
mid-infrared
pulses
offer
advantages
for
studying
many-body
physics
and
ultrafast
optoelectronics
via
high-harmonic
generation.
While
the
process
has
been
used
to
study
solids
in
presence
fields,
its
potential
as
an
attosecond
light
source
is
largely
underexplored.
We
demonstrate
that
high-harmonics
emitted
from
zinc-oxide
produce
pulses,
measured
through
spectroscopy
of
alkali
metals.
Using
a
cross-correlation
approach,
we
photoionize
Cesium
atoms
with
vacuum-ultraviolet
laser
field.
observe
oscillations
photoelectron
yield,
originating
instantaneous
polarization
The
phase
these
encodes
synchronization
pulse
metrology.
This
opens
new
spectral
windows
spectroscopy,
enabling
studies
bound-state
dynamics
natural
systems
low
ionization
energies,
while
facilitating
generation
non-classical
entangled
states
visible-VUV.
Attosecond
metrology
vacuum-ultraviolet.
demonstrates
laser-driven
semiconductors
window
across
all
matter.
Opto-Electronic Advances,
Journal Year:
2022,
Volume and Issue:
6(3), P. 220046 - 220046
Published: Sept. 30, 2022
The
generation
of
power-
and
wavelength-scalable
few
optical
cycle
pulses
remains
one
the
major
challenges
in
modern
laser
physics.
Over
past
decade,
development
table-top
parametric
chirped
pulse
amplification-based
systems
was
progressing
at
amazing
speed,
demonstrating
excellent
performance
characteristics
terms
duration,
energy,
peak
power
repetition
rate,
which
place
them
front
line
ultrafast
technology.
At
present,
amplifiers
comprise
a
unique
class
light
sources,
currently
amplify
octave-spanning
spectra
produce
carrier-envelope
phase-stable,
with
multi-gigawatt
to
multi-terawatt
powers
multi-watt
average
powers,
carrier
wavelengths
spanning
considerable
range
spectrum.
This
article
gives
an
overview
on
state
art
amplifiers,
addressing
their
relevant
scientific
technological
aspects,
provides
short
outlook
practical
applications
growing
field
science.
Optica,
Journal Year:
2024,
Volume and Issue:
11(10), P. 1368 - 1368
Published: Aug. 27, 2024
SESAM
modelocked
oscillators
are
interesting
for
applications
in
strong-field
physics
such
as
high-harmonic
generation
and
attosecond
science
at
high
repetition
rates
or
frequency
combs
the
ultraviolet.
Here
we
present
a
ultrafast
thin-disk
laser
oscillator
providing
550W
of
average
output
power
with
852fs
pulses
5.5MHz
rate.
To
reach
this
significant
scaling,
replicating
cavity
design
is
utilized.
The
delivers
103
MW
peak
pulse
energy
100
µJ
beam
quality
M
2
<1.2,
optical-to-optical
efficiency
35%.
advances
manufacturing
that
enabled
result
discussed,
well
practical
challenges
when
scaling
to
kW-class.
When
combined
established
compression
technologies,
can
enable
simpler
systems
by
avoiding
complexity
chirped
amplifier
chains.
Additionally,
support
much
lower
noise
floor
due
reduced
influence
shot
noise,
which
may
provide
route
more
sensitive
pump-probe
measurements.
Ultrafast Science,
Journal Year:
2024,
Volume and Issue:
4
Published: Jan. 1, 2024
Advancements
in
light
engineering
have
led
to
the
creation
of
pulsed
laser
sources
capable
delivering
high-repetition-rate,
high-power
few-cycle
pulses
across
a
wide
spectral
range,
enabling
exploration
many
fascinating
nonlinear
processes
occurring
all
states
matter.
High-harmonic
generation,
one
such
process,
which
converts
low-frequency
photons
driver
field
into
soft
x-rays,
has
revolutionized
atomic,
molecular,
and
optical
physics,
leading
progress
attosecond
science
ultrafast
optoelectronics.
The
Extreme
Light
Infrastructure,
Attosecond
Pulse
Source
(ELI
ALPS)
facility
pioneers
state-of-the-art
tools
for
research
these
areas.
This
paper
outlines
design
rationale,
capabilities,
applications
plasma-
gas-based
high-repetition-rate
(1
kHz
100
kHz)
extreme
ultraviolet
(XUV)
beamlines
developed
at
ELI
ALPS,
highlighting
their
potential
advancing
various
fields.
Journal of Physics Photonics,
Journal Year:
2022,
Volume and Issue:
4(3), P. 032001 - 032001
Published: May 31, 2022
Abstract
Within
the
last
two
decades
attosecond
science
has
been
established
as
a
novel
research
field
providing
insights
into
ultrafast
electron
dynamics
that
follows
photoexcitation
or
photoionization
process.
Enabled
by
technological
advances
in
laser
amplifiers,
turn,
powerful
engine
driving
development
of
sources
intense
pulses.
This
article
focuses
on
high
repetition
rate
laser-based
delivering
energy
pulses
with
duration
only
few
optical
cycles,
for
applications
science.
In
particular,
power,
parametric
chirped
pulse
amplification
system
is
described,
which
was
developed
to
drive
an
pump-probe
beamline
targeting
experiments
electron-ion
coincidence
detection
at
acquisition
rates.
Ultrafast Science,
Journal Year:
2022,
Volume and Issue:
2022
Published: Jan. 1, 2022
High-repetition
rate
attosecond
pulse
sources
are
indispensable
tools
for
time-resolved
studies
of
electron
dynamics,
such
as
coincidence
spectroscopy
and
experiments
with
high
demands
on
statistics
or
signal-to-noise
ratio,
especially
in
the
case
solid
big
molecule
samples
chemistry
biology.
Although
high-repetition
lasers,
pulses
a
pump-probe
configuration
possible
to
achieve,
until
now,
only
few
light
have
been
demonstrated.
Here,
by
shaping
driving
laser
an
annular
beam,
100
kHz
train
(APT)
is
reported
highest
energy
so
far
(51
pJ/shot)
target
(269
pJ
at
generation)
among
systems
(>10
kHz)
which
were
temporally
characterized.
The
on-target
maximized
reducing
losses
from
reflections
filtering
harmonics,
unprecedented
19%
transmission
generation
point
position
achieved.
At
same
time,
probe
beam
also
low
loss
this
reached
using
another
holey
mirror
combine
APT.
advantages
generate
high-average
power
demonstrated
experimentally
theoretically.
effect
nonlinear
propagation
medium
annular-beam
concept
analyzed
detail.
Physical review. A/Physical review, A,
Journal Year:
2023,
Volume and Issue:
107(2)
Published: Feb. 17, 2023
High-order
harmonic
generation
(HHG)
normally
requires
a
careful
adjustment
of
the
driving
laser
intensity
(typically
${10}^{14}--{10}^{15}$
W/${\mathrm{cm}}^{2}$)
and
gas
medium
parameters
to
obtain
microscopically
macroscopically
optimized
output.
In
contrast
conventional
wisdom,
we
present
experimental
results
indicating
efficient
HHG
in
all
rare
gases,
using
high-density
around
${10}^{16}$
W/${\mathrm{cm}}^{2}$.
The
are
corroborated
by
theoretical
simulations,
which
indicate
that
ionization-induced
self-phase
modulation
plasma
defocusing
self-regulate
driver
level
allows
HHG.
A
tenfold
broadening
near-infrared
spectrum
is
observed,
continuous
spectra
from
18
140
eV
spite
50-fs-long
pulses.
presented
scheme
represents
simple
versatile
concept
for
extreme-ultraviolet
soft-x-ray
continua,
could
be
used
transient
absorption
reflection
spectroscopy.
Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(6), P. 3013 - 3013
Published: March 11, 2025
This
study
investigates
the
hourglass–spindle-shaped
trajectory
of
electron
motion
based
on
a
model
and
circularly
polarized
chirped
laser
pulse
coaxial
collision.
The
velocity,
acceleration,
radiation
distribution
in
this
state
are
systematically
analyzed.
formation
process
is
examined
detail.
Four
distinct
stages
electron–laser
collision
proposed,
with
an
in-depth
analysis
interaction
dynamics
underlying
mechanisms
each
stage.
critical
conditions
for
identified,
along
emergence
two
other
possible
trajectories
resulting
from
collision:
spiral-shaped
spindle-shaped
trajectories.
Additionally,
general
analyzing
collisions
proposed.
