Self-starting mode-locking in an all-PM Yb-doped fiber laser oscillator enabled by a 3x3 nonlinear optical lossy loop mirror
Optics Express,
Journal Year:
2023,
Volume and Issue:
31(25), P. 42136 - 42136
Published: Nov. 3, 2023
Ultrafast
fiber
oscillators
based
on
loop
mirror
saturable
absorbers
often
suffer
from
a
problematic
self-starting
mode-locking
operation.
It
is
usually
necessary
to
provide
an
additional
phase
shift
in
the
loop,
guaranteeing
repeatable
initiation
of
pulsed
regime.
3x3
even
splitting
ratio
couplers
have
recently
introduced
required
all-fiber
architecture.
Until
now,
induced
by
coupler
has
been
associated
only
with
nonlinear
amplifying
mirrors.
Here,
we
present
ultrafast
dispersion-managed
all-polarization-maintaining
Yb-doped
oscillator
that
utilizes
optical
lossy
instead.
We
show
three
ways
inserting
asymmetric
losses
via
variable
attenuator,
coupler,
and
very
simple
splice.
Complete
characterization
all
output
ports
proves
significant
spectral
temporal
breathing
pulse
when
circulating
through
net
normal
dispersion
cavity,
which
can
deliver
nJ-level
energy.
The
system
guarantees
excellent
stability,
low
noise
performance
comparable
mirrors
while
being
simpler,
cheaper,
providing
more
usable
different
characteristics.
Language: Английский
All-polarization-maintaining Nd-doped ultrafast fiber laser oscillator at 929 nm mode-locked via a 3x3 nonlinear amplifying loop mirror
Optics Express,
Journal Year:
2024,
Volume and Issue:
32(18), P. 31672 - 31672
Published: Aug. 16, 2024
Successful
generation
of
ultrashort
pulses
in
the
spectral
region
920
nm
using
Nd-doped
fibers
requires
effectively
suppressing
dominant
1064
four-level
transition.
Utilizing
a
hybrid
design
incorporating
W-shaped
double-clad
fiber
and
single-clad
together
with
filtering
out
parasitic
1.06
µm
beam,
we
developed
an
oscillator
capable
delivering
at
central
wavelength
929
nm.
Here,
transferred
crucial
components
technology
from
well-developed
Yb-doped
systems
to
build
all-polarization-maintaining
laser
oscillator.
The
pulsed
operation
is
obtained
through
passive
mode-locking
via
nonlinear
amplifying
loop
mirror
based
on
3x3
coupler.
self-starting
system
has
figure-of-8
all-normal-dispersion
cavity
operates
dissipative
soliton
regime.
oscillator,
generating
energy
exceeding
1
nJ,
delivers
chirped
14.3
ps
pulses,
which
can
be
compressed
313
fs.
Language: Английский
Self-starting mode-locking in an all-PM Yb-doped fiber laser oscillator enabled by a 3x3 nonlinear optical lossy loop mirror
Published: Sept. 7, 2023
Artificial
saturable
absorbers
based
on
loop
mirrors
often
suffer
from
a
not
self-starting
mode-locking
operation.
It
is
usually
necessary
to
provide
an
additional
phase
shift
in
the
loop,
guaranteeing
repeatable
initiation
of
pulsed
regime.
3x3
even
fiber
couplers
have
recently
enabled
introduction
all-fiber
mirror
architecture.
Until
now,
induced
by
coupler
has
been
associated
only
with
nonlinear
amplifying
mirrors.
Here,
we
present
ultrafast
dispersion-managed
all-polarization-maintaining
Yb-doped
oscillator
that
utilizes
optical
lossy
instead.
We
show
three
ways
introducing
asymmetric
losses
via
variable
attenuator,
coupler,
and
very
simple
splice.
Complete
characterization
all
output
ports
proves
significant
spectral
temporal
breathing
pulse
when
circulating
through
net
normal
dispersion
cavity,
which
can
deliver
nJ-level
energy.
The
system
guarantees
excellent
stability
performance
comparable
while
being
simpler,
cheaper,
providing
more
usable
different
characteristics.
Language: Английский
All-polarization-maintaining Nd-doped ultrafast fiber laser oscillator at 929 nm mode-locked via a 3x3 nonlinear amplifying loop mirror
Published: May 17, 2024
Successful
generation
of
ultrashort
pulses
in
the
spectral
region
920
nm
using
Nd-doped
fibers
requires
effectively
suppressing
dominant
1064
four-level
transition.
Utilizing
a
hybrid
design
incorporating
W-shaped
double-clad
fiber
and
single-clad
together
with
filtering
out
parasitic
1.06
μm
beam,
we
developed
an
oscillator
capable
delivering
at
central
wavelength
929
nm.
Here,
transferred
crucial
components
technology
from
well-developed
Yb-doped
systems
order
to
build
all-polarization-maintaining
laser
oscillator.
The
pulsed
operation
is
obtained
through
passive
mode-locking
via
nonlinear
amplifying
loop
mirror
based
on
3x3
coupler.
self-starting
system
has
figure-of-8
all-normal-dispersion
cavity
operates
dissipative
soliton
regime.
oscillator,
generating
energy
exceeding
1
nJ,
delivers
chirped
14.3
ps
pulses,
which
can
be
compressed
313
fs.
Language: Английский
All-polarization-maintaining Nd-doped ultrafast fiber laser oscillator at 929 nm mode-locked via a 3x3 nonlinear amplifying loop mirror
Published: May 17, 2024
Successful
generation
of
ultrashort
pulses
in
the
spectral
region
920
nm
using
Nd-doped
fibers
requires
effectively
suppressing
dominant
1064
four-level
transition.
Utilizing
a
hybrid
design
incorporating
W-shaped
double-clad
fiber
and
single-clad
together
with
filtering
out
parasitic
1.06
μm
beam,
we
developed
an
oscillator
capable
delivering
at
central
wavelength
929
nm.
Here,
transferred
crucial
components
technology
from
well-developed
Yb-doped
systems
order
to
build
all-polarization-maintaining
laser
oscillator.
The
pulsed
operation
is
obtained
through
passive
mode-locking
via
nonlinear
amplifying
loop
mirror
based
on
3x3
coupler.
self-starting
system
has
figure-of-8
all-normal-dispersion
cavity
operates
dissipative
soliton
regime.
oscillator,
generating
energy
exceeding
1
nJ,
delivers
chirped
14.3
ps
pulses,
which
can
be
compressed
313
fs.
Language: Английский
3x3 nonlinear optical lossy loop mirror for self-starting mode-locking in all-PM-fiber lasers
Published: Jan. 1, 2024
3x3
fiber
couplers
introduce
a
2
π
/3
phase
shift,
which
helps
initiate
the
mode-locking
operation.
Here,
we
provide
more
in-depth
insight
into
performance
of
nonlinear
loop
mirror
with
an
asymmetrically
placed
lossy
splice.
Language: Английский
Nonlinear polarization rotation based 635-nm praseodymium doped mode-locked fiber laser
Applied Physics Express,
Journal Year:
2024,
Volume and Issue:
17(11), P. 112002 - 112002
Published: Oct. 22, 2024
Abstract
We
demonstrated
a
mode-locked
fiber
laser
oscillator
using
nonlinear
polarization
rotation
as
saturable
absorption
system.
The
generates
pulses
by
adjusting
four
waveplates.
A
single-clad
Pr
3+
-doped
single
mode
fluoride
with
425
mW
threshold
pump
power
serves
the
foundation
for
ring
cavity,
which
operates
in
dissipative
soliton
resonance
regime.
radio
frequency
signal-to-noise
ratio
of
at
634.9
nm
is
60
dB,
maximum
output
5.5
mW,
and
repetition
rate
34.5
MHz.
These
findings
provide
advancement
photonic
applications
visible
spectrum.
Language: Английский