SU(2)-Hidden symmetry of two-level media: Propagation of higher-order ultimately short-wave excitations with nonzero angular momenta
Romuald K.K. Lemoula,
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Victor K. Kuetche
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Physica D Nonlinear Phenomena,
Journal Year:
2025,
Volume and Issue:
unknown, P. 134539 - 134539
Published: Jan. 1, 2025
Language: Английский
Generation of 8-fs and 13-nJ pulse from a Yb-doped all-fiber-integrated nonlinear-pulse-compression system
Tong Xia,
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He Zhao,
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Shuyuan Zhu
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et al.
Optics Express,
Journal Year:
2024,
Volume and Issue:
32(18), P. 32396 - 32396
Published: Aug. 13, 2024
In
this
study,
we
demonstrated
a
few-cycle
pulse
generation
system
delivering
an
8-fs
and
13-nJ
pulse.
The
oscillator
of
is
mode-locked
fiber
laser
based
on
nonlinear
amplifying
loop
mirror
(NALM),
which
injected
into
the
gain
management
(GMN)
amplifier
after
pre-chirp
by
chirped
Bragg
grating
(CFBG)
passive
fiber.
Subsequently,
hollow-core
photonic
bandgap
(HC-PBG)
employed
to
compensate
for
dispersion,
achieving
duration
49.8
fs
with
energy
51.8
nJ.
Finally,
integrate
ultra-high
numerical
aperture
(UHNA)
at
end
HC-PBG
spectral
broadening.
resulting
range
spans
from
800
1400
nm.
Dispersion
compensation
achieved
using
prism-pair,
in
further
compression
8.2
fs,
13.1
nJ
peak
power
1.59
MW.
With
overall
footprint
<0.1
m
2
total
volume
<0.005
3
,
delivers
ultra-short
pulses
high
while
maintaining
compactness
stability,
making
it
attractive
many
applications.
Language: Английский
Gain-managed nonlinear amplification in an Erbium-doped fiber
Optics Express,
Journal Year:
2024,
Volume and Issue:
32(27), P. 48815 - 48815
Published: Dec. 17, 2024
To
our
knowledge,
we
report
the
first
experimental
demonstration
of
gain-managed
nonlinear
(GMN)
amplification
femtosecond
pulses
in
an
erbium-doped
fiber
amplifier
(EDFA).
We
investigated
GMN
using
two
different
seed
sources,
operating
at
wavelengths
1530
and
1560
nm.
obtained
broadband
output
spectra
spanning
entire
C-
L-bands
(1530-1620
nm).
Our
study
shows
that,
contrast
to
Yb-doped
amplifiers,
it
is
not
critical
choose
a
wavelength
located
short-wave
edge
gain
bandwidth
amplifier.
Efficient
can
also
be
achieved
with
nm
wavelength.
Language: Английский
All-Solid-State Post-Compression of Low Energy Pulses at High Repetition Rate
Vaida Marčiulionytė,
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Jonas Banys,
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Julius Vengelis
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et al.
Published: March 26, 2024
We
demonstrate
a
proof-of-principle
of
simple
all-solid-state
post-compression
setup
for
low
energy,
high
repetition
rate
laser
pulses,
where
spectral
broadening
was
performed
using
combination
highly
nonlinear
bulk
materials
in
single
pass
geometry.
75
fs,
210
nJ
pulses
from
an
amplified
76
MHz,
15.7
W
Yb:KGW
oscillator
after
sequential
ZnS
and
YAG
samples
2
mm
15
thickness,
respectively,
were
compressed
to
37
fs
by
means
Gires–Tournois
interferometric
mirrors.
The
post-compressed
with
average
power
11.47
demonstrated
reasonable
spatial-spectral
homogeneity
the
beam
overlap
parameter
V>83%
good
quality
Mx2=1.28
My2=1.14.
Language: Английский
All-Solid-State Post-Compression of Low-Energy Pulses at High Repetition Rate
Vaida Marčiulionytė,
No information about this author
Jonas Banys,
No information about this author
Julius Vengelis
No information about this author
et al.
Photonics,
Journal Year:
2024,
Volume and Issue:
11(4), P. 386 - 386
Published: April 19, 2024
We
demonstrate
a
proof
of
principle
simple
all-solid-state
post-compression
setup
for
low-energy,
high-repetition-rate
laser
pulses,
where
spectral
broadening
was
performed
using
combination
highly
nonlinear
bulk
materials
in
single-pass
geometry.
The
75
fs,
210
nJ
pulses
from
an
amplified
76
MHz,
15.7
W
Yb:KGW
oscillator
after
sequential
ZnS
and
YAG
samples
2
mm
15
thickness,
respectively,
were
compressed
to
37
fs
by
means
Gires–Tournois
interferometric
mirrors.
post-compressed
with
average
power
11.47
demonstrated
reasonable
spatial-spectral
homogeneity
the
beam
overlap
parameter
V>83%
good
quality
Mx2=1.28
My2=1.14.
Language: Английский