Laser & Photonics Review,
Год журнала:
2021,
Номер
15(6)
Опубликована: Апрель 27, 2021
Abstract
The
advancement
of
mid‐infrared
(MIR)
parametric
amplification
technique
serves
as
the
main
driving
force
multiple
strong‐field
experiments
in
frontier
science
such
generation
coherent
soft
X‐ray
and
isolated
attosecond
pulses.
However,
low
down‐conversion
efficiency
especially
MIR
wavelength
is
a
major
bottleneck
that
hinders
further
exploration
MIR‐laser‐driven
physics.
Here,
simple
robust
method
doubles
optical
chirped‐pulse
amplifier
(OPCPA)
reported,
demonstration
concept,
through
engineering
flat‐top
pump
profile
via
high‐efficiency
diffractive
elements.
With
proposed
scheme,
OPCPA
system
at
3
μm
10
kHz
repetition
rate
with
both
record
pulse
energy
2.7
mJ
highest
average
power
27
W
among
OPCPAs
demonstrated.
This
work
provides
promising
approach
for
achieving
high
few‐cycle
lasers
can
be
readily
used
emerging
strong
field
experiments.
In
addition,
it
believed
developed
this
become
general
enhancement,
which
applicable
to
other
nonlinear
conversions
ranges.
Nature Communications,
Год журнала:
2020,
Номер
11(1)
Опубликована: Июнь 2, 2020
Abstract
Recent
progress
in
high
power
ultrafast
short-wave
and
mid-wave
infrared
lasers
has
enabled
gas-phase
harmonic
generation
(HHG)
the
water
window
beyond,
as
well
demonstration
of
HHG
condensed
matter.
In
this
Perspective,
we
discuss
recent
advancements
future
trends
generating
characterizing
soft
X-ray
pulses
from
extreme
ultraviolet
(XUV)
solid-state
HHG.
Then,
their
current
potential
usage
time-resolved
study
electron
nuclear
dynamics
atomic,
molecular
matters.
Laser & Photonics Review,
Год журнала:
2022,
Номер
17(1)
Опубликована: Окт. 26, 2022
Abstract
The
petawatt
(PW)
laser
has
experienced
a
rapid
development
in
the
past
two
decades,
and
tens
of
giant
facilities
have
been
constructed
worldwide.
After
realizing
10–100
PW,
it
seems
to
be
close
some
sort
engineering
limit
but
its
focused
peak
intensity
still
is
much
lower
than
Schwinger
limit,
therefore
technology
improvements
or
innovations
become
indispensable
for
further
increasing
power
as
well
intensity.
By
quick
reviewing
PW
history,
shown
that
reducing
pulse
duration
near
single
optical
cycle
feasible
(easy
cheap)
choice
this
purpose.
Here,
technologies
optical‐cycle
generation,
ultrabroadband
amplification,
capability
boosting
aim
provide
possible
approaches
lasers
are
briefly
reviewed
discussed.
Meanwhile,
key
bottlenecks
challenge
current
future
short‐pulse
their
solutions
summarized
This
review
aims
roadmap
next‐stage
laser.
Advances in Optics and Photonics,
Год журнала:
2022,
Номер
14(4), С. 652 - 652
Опубликована: Авг. 31, 2022
The
advent
of
chirped-pulse
amplification
in
the
1980s
and
femtosecond
Ti:sapphire
lasers
1990s
enabled
transformative
advances
intense
laser–matter
interaction
physics.
Whereas
most
experiments
have
been
conducted
limited
near-infrared
range
0.8–1
μm,
theories
predict
that
many
physical
phenomena
such
as
high
harmonic
generation
gases
favor
long
laser
wavelengths
terms
extending
high-energy
cutoff.
Significant
progress
has
made
developing
few-cycle,
carrier-envelope
phase-stabilized,
high-peak-power
1.6–2
μm
laid
foundation
for
attosecond
X
ray
sources
water
window.
Even
longer
wavelength
are
becoming
available
suitable
to
study
light
filamentation,
generation,
laser–plasma
relativistic
regime.
Long-wavelength
sub-bandgap
strong-field
excitation
a
wide
solid
materials,
including
semiconductors.
In
limit,
bulk
crystals
also
produce
high-order
harmonics.
this
review,
we
first
introduce
several
important
scaling
laws
physics,
then
describe
recent
breakthroughs
short-
(1.4–3
μm),
mid-
(3–8
long-wave
(8–15
μm)
infrared
technology,
finally
provide
examples
applications
these
novel
lasers.
Some
broadband
ultrafast
will
profound
effects
on
medicine,
environmental
protection,
national
defense,
because
their
cover
absorption
band,
molecular
fingerprint
region,
well
atmospheric
transparent
Optics Express,
Год журнала:
2020,
Номер
28(6), С. 8724 - 8724
Опубликована: Фев. 25, 2020
We
developed
a
high
power
optical
parametric
chirped-pulse
amplification
(OPCPA)
system
at
2.1
µm
harnessing
500
W
Yb:YAG
thin
disk
laser
as
the
only
pump
and
signal
generation
source.
The
OPCPA
operates
10
kHz
with
single
pulse
energy
of
up
to
2.7
mJ
duration
30
fs.
maximum
average
output
27
sets
new
record
for
an
in
2
wavelength
region.
soft
X-ray
continuum
generated
through
harmonic
this
driver
can
extend
around
0.55
keV,
thus
covering
entire
water
window
(284
eV
-
543
eV).
With
repetition
rate
still
enabling
pump-probe
experiments
on
solid
samples,
be
used
many
applications.
Light Science & Applications,
Год журнала:
2021,
Номер
10(1)
Опубликована: Фев. 12, 2021
Abstract
Bright,
coherent
soft
X-ray
radiation
is
essential
to
a
variety
of
applications
in
fundamental
research
and
life
sciences.
To
date,
high
photon
flux
this
spectral
region
can
only
be
delivered
by
synchrotrons,
free-electron
lasers
or
high-order
harmonic
generation
sources,
which
are
driven
kHz-class
repetition
rate
with
very
peak
powers.
Here,
we
establish
novel
route
toward
powerful
easy-to-use
SXR
sources
presenting
compact
experiment
nonlinear
pulse
self-compression
the
few-cycle
regime
combined
phase-matched
single,
helium-filled
antiresonant
hollow-core
fibre.
This
enables
first
100
rate,
table-top
source
that
delivers
an
application-relevant
2.8
×
10
6
s
−1
eV
around
300
eV.
The
fibre
integration
temporal
(leading
formation
necessary
strong-field
waveforms)
pressure-controlled
phase
matching
will
allow
compact,
high-repetition-rate
laser
technology,
including
commercially
available
systems,
drive
simple
cost-effective,
high-flux
sources.
Journal of Physics B Atomic Molecular and Optical Physics,
Год журнала:
2021,
Номер
54(9), С. 094001 - 094001
Опубликована: Май 5, 2021
Abstract
The
electric
dipole
approximation
is
widely
used
in
atomic,
molecular
and
optical
physics
typically
related
to
a
regime
for
which
the
wavelength
much
larger
than
atomic
structure.
However,
studies
have
shown
that
strong
laser
fields
another
exists
where
breaks
down.
During
ionization
process
intense
at
long
wavelengths
photoelectrons
can
reach
higher
velocities
such
magnetic
field
component
of
becomes
significant.
dynamics
final
momentum
electron
therefore
modified
by
entire
Lorentz
force.
In
contrast
interaction
neglected
approximation.
Rapid
developments
technology
advancements
accuracy
measurements
techniques
enabled
observation
influence
non-dipole
effects
on
angular
photoelectron
distributions.
More
recently
number
beyond
has
increased
significantly,
providing
more
important
insight
into
fundamental
properties
processes.
For
example
we
three
dimensional
spectra
significantly
affected
drift
with
parent–ion
interaction,
linear
multiphoton
transfer
sub-cycle
time
scale
sharing
transferred
photon
momenta
between
ion.
this
article
present
an
overview
underlying
mechanisms
review
experimental
achievements
field.
We
focus
not
valid
but
fully
relativistic
description
required.
Opto-Electronic Advances,
Год журнала:
2022,
Номер
6(3), С. 220046 - 220046
Опубликована: Сен. 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.
Structural Dynamics,
Год журнала:
2024,
Номер
11(1)
Опубликована: Янв. 1, 2024
Novel
ultrafast
x-ray
sources
based
on
high
harmonic
generation
and
at
free
electron
lasers
are
opening
up
new
opportunities
to
resolve
complex
processes
in
condensed
phase
systems
with
exceptional
temporal
resolution
atomic
site
specificity.
In
this
perspective,
we
present
techniques
for
resolving
charge
localization,
transfer,
separation
organic
semiconductors
photovoltaic
devices
time-resolved
soft
spectroscopy.
We
review
recent
results
spectroscopy
of
these
discuss
routes
overcome
the
technical
challenges
performing
experiments
photosensitive
materials
poor
thermal
conductivity
low
pump
intensity
thresholds
nonlinear
effects.
Optics Letters,
Год журнала:
2020,
Номер
45(21), С. 5998 - 5998
Опубликована: Сен. 28, 2020
A
table-top
midwave-infrared
optical
parametric
chirped
pulse
amplification
(OPCPA)
system
generates
few-cycle
pulses
with
multi-10
GW
peak
power
at
a
1
kHz
repetition
rate.
The
all-optically
synchronized
utilizes
ZnGeP2
nonlinear
crystals
and
highly
stable
2
µm
picosecond
pump
laser
based
on
Ho:YLiF4.
An
excellent
energy
extraction
is
achieved
by
reusing
the
after
third
stage,
resulting
in
3.4
mJ
idler
center
wavelength
of
4.9
µm.
Pulses
as
short
89.4
fs
are
achieved,
close
to
only
five
cycles.
Taking
into
account
energy,
record
high
33
for
high-energy
mid-IR
OPCPAs
beyond
4
demonstrated.
