Optical
materials
transparent
in
the
CO₂
laser
wavelength
range
have
been
evaluated
regarding
their
suitability
for
components
ultrashort-pulse
(≤
a
few
ps),
high-peak-power
(≥
TW)
long-wave
infrared
(LWIR)
lasers.
We
provide
values
nonlinear
refractive
index
(n₂)
seventeen
materials,
and
thresholds
absorption
eleven
materials.
Characterizations
were
performed
using
2
ps
pulse
at
λ
=
9.2
μm.
This
paper
methodically
presents
newly
acquired
data
conjunction
with
existing
literature
on
linear
optical
properties,
establishing
it
as
comprehensive
reference
designing
LWIR
systems.
Abstract
We
introduce
the
refractiveindex.info
database,
a
comprehensive
open-source
repository
containing
optical
constants
for
wide
array
of
materials,
and
describe
in
detail
underlying
dataset.
This
collection,
derived
from
meticulous
compilation
data
sourced
peer-reviewed
publications,
manufacturers’
datasheets,
authoritative
texts,
aims
to
advance
research
optics
photonics.
The
is
stored
using
YAML-based
format,
ensuring
integrity,
consistency,
ease
access.
Each
record
accompanied
by
detailed
metadata,
facilitating
understanding
efficient
utilization
data.
In
this
descriptor,
we
outline
curation
protocols
file
format
used
records,
briefly
demonstrate
how
can
be
organized
user-friendly
fashion
akin
books
traditional
library.
Optical Materials Express,
Год журнала:
2024,
Номер
14(3), С. 696 - 696
Опубликована: Янв. 10, 2024
Optical
materials
transparent
in
the
CO
2
laser
wavelength
range
have
been
evaluated
regarding
their
suitability
for
components
ultrashort-pulse
(≤
a
few
ps),
high-peak-power
(≥
TW)
long-wave
infrared
(LWIR)
lasers.
We
provide
values
nonlinear
refractive
index
(
n
)
seventeen
materials,
and
onsets
absorption
eleven
materials.
Characterizations
were
performed
using
ps
pulse
at
λ
=9.2
μ
m.
This
paper
methodically
presents
newly
acquired
data
conjunction
with
existing
literature
on
linear
optical
properties,
establishing
it
as
comprehensive
reference
designing
LWIR
systems.
Optics Express,
Год журнала:
2023,
Номер
31(12), С. 19794 - 19794
Опубликована: Май 11, 2023
This
study
presents
a
novel
way
to
increase
the
energy
conversion
efficiency
of
optical
parametric
amplification
by
eliminating
idler
wave
from
interaction
using
consecutive
type-I
and
type-II
processes.
By
aforementioned
straightforward
approach
wavelength
tunable
narrow-bandwidth
with
exceptionally
high
40%
peak
pump-to-signal
68%
pump
depletion
was
achieved
in
short-pulse
regime,
while
preserving
beam
quality
factor
less
than
1.4.
The
same
layout
can
also
serve
as
an
enhanced
scheme.
Optics Express,
Год журнала:
2023,
Номер
31(9), С. 14096 - 14096
Опубликована: Март 21, 2023
We
report
on
dispersion
management
in
mid-IR
optical
parametric
chirped
pulse
amplifiers
(OPCPA)
aiming
for
high-energy
few-cycle
pulses
beyond
4
µm.
The
available
shapers
this
spectral
region
limit
the
feasibility
of
sufficient
higher-order
phase
control.
Intending
generation
high
energy
at
12
µm
via
DFG
driven
by
signal
and
idler
a
midwave-IR
OPCPA,
we
introduce
alternative
approaches
shaping,
namely
germanium-prism
pair
sapphire-prism
Martinez
compressor.
Furthermore,
explore
limits
bulk
compression
Si
Ge
multi-mJ
energies.
Applied Physics Letters,
Год журнала:
2023,
Номер
123(9)
Опубликована: Авг. 28, 2023
We
propose
a
simple
method
to
measure
nonlinear
Kerr
refractive
index
in
mid-infrared
frequency
range
that
avoids
using
sophisticated
infrared
detectors.
Our
approach
is
based
on
near-infrared
probe
beam
which
interacts
with
mid-IR
via
wavelength-non-degenerate
cross-phase
modulation
(XPM).
By
carefully
measuring
XPM-induced
spectral
modifications
the
and
comparing
experimental
data
simulation
results,
we
extract
value
for
non-degenerate
index.
Finally,
order
obtain
of
degenerate
index,
use
well-established
two-band
formalism
Sheik-Bahae
et
al.,
shown
become
particularly
limit
low
frequencies.
The
proposed
technique
complementary
conventional
techniques,
such
as
z-scan,
has
advantage
not
requiring
any
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.
Photonics,
Год журнала:
2024,
Номер
11(4), С. 386 - 386
Опубликована: Апрель 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.
This
study
presents
a
novel
way
to
increase
the
energy
conversion
efficiency
of
optical
parametric
amplification
by
eliminating
idler
wave
from
interaction
using
consecutive
type-I
and
type-II
processes.
By
aforementioned
straightforward
approach
wavelength
tunable
narrow-bandwidth
with
exceptionally
high
40%
peak
pump-to-signal
68%
pump
depletion
was
achieved
in
short-pulse
regime,
while
preserving
beam
quality
factor
less
than
1.4.
The
same
layout
can
also
serve
as
an
enhanced
scheme.
This
study
presents
a
novel
way
to
increase
the
energy
conversion
efficiency
of
optical
parametric
amplification
by
eliminating
idler
wave
from
interaction
using
consecutive
type-I
and
type-II
processes.
By
aforementioned
straightforward
approach
wavelength
tunable
narrow-bandwidth
with
exceptionally
high
40%
peak
pump-to-signal
68%
pump
depletion
was
achieved
in
short-pulse
regime,
while
preserving
beam
quality
factor
less
than
1.4.
The
same
layout
can
also
serve
as
an
enhanced
scheme.
Optical
materials
transparent
in
the
CO₂
laser
wavelength
range
have
been
evaluated
regarding
their
suitability
for
components
ultrashort-pulse
(≤
a
few
ps),
high-peak-power
(≥
TW)
long-wave
infrared
(LWIR)
lasers.
We
provide
values
nonlinear
refractive
index
(n₂)
seventeen
materials,
and
thresholds
absorption
eleven
materials.
Characterizations
were
performed
using
2
ps
pulse
at
λ
=
9.2
μm.
This
paper
methodically
presents
newly
acquired
data
conjunction
with
existing
literature
on
linear
optical
properties,
establishing
it
as
comprehensive
reference
designing
LWIR
systems.
