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Thin BBO Crystal for Ultrafast
Lasers
For frequency conversions of ultrafast lasers, one of the main concerns is pulse broadening induced by group velocity
(Vg) mismatch between the input pulses and
the generated pulse in
an NLO
crystal. In order to avoid pulse broadening, the thickness of the
crystal should not exceed the maximum length (Lmax)
as defined by the pulsewidth divided by the inversed group velocity
mismatch ( IGVM = ΔVg-1).
The table below lists the Lmax for
second harmonic generation (SHG) and sum frequency generation (SFG) of 10 fs pulses
at the wavelength range of a Ti:Sapphire laser,
the most popular ultrafast laser.
|
Type I PM in BBO Crystal |
SHG
@
700 nm |
SHG
@
800 nm |
SHG
@
900 nm |
SFG
@
700 nm + 350nm |
SFG @
800 nm + 400 nm |
SFG
@
900 nm + 450nm |
|
IGVM (ps/cm) |
2.72 |
1.92 |
1.40 |
8.50 |
5.68 |
4.08 |
|
Lmax @
10fs (µm) |
40 |
50 |
70 |
10 |
18 |
25 |
A thickness of sub-100µm
(0.1mm) is desired for all the frequency conversion processes of 10fs pulses. In particular, crystals as thin as 10-20µm may be needed for generation of very short UV wavelengths
below 300nm.
Newlight
Photonics can provide BBO crystals as thin as 10µm (0.01mm) for frequency
conversions of very short pulses.
We also supply birefringent calcite
plates and alpha-BBO plates for
compensation of the temporal walkoff in nonlinear crystals (time delay compensators), please contact us for
your requirements.
Standard
Products
BBO for Second Harmonic Generation (SHG) of Ti
Sapphire Lasers
|
Part No. |
Description |
In stock |
|
BTC5001-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.01mm, P-coating @ 400-800nm, for Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Yes
$979 |
|
BTC5002-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.02mm, P-coating @ 400-800nm, for Type I SHG of
λ centred @ 800 nm,
mounted in 1" anodized Al holder |
Email/Call |
|
BTC5005-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.05mm, P-coating @ 400-800nm, for Type I SHG of
λ centred @ 800 nm,
mounted in 1" anodized Al holder |
Yes $899 |
|
BTC5010-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.1mm, P-coating @ 400-800nm, for Type I SHG of
λ centred @ 800 nm,
mounted in 1" anodized Al holder |
Email/Call |
|
BTC5020-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.2mm, P-coating @ 400-800nm,
for Type I SHG centred @ 800 nm, mounted in 1" anodized Al
holder |
Yes |
|
BTC5050-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.5mm, P-coating @ 400-800nm,
for Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Yes
$559 |
|
BTC5100-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 1.0mm, P-coating @ 400-800nm, for Type I SHG of
λ centred @ 800 nm,
mounted in 1" anodized Al holder |
Yes
$579 |
|
BTC5200-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 2.0mm, P-coating @ 400-800nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Yes
$559 |
|
BTC5300-SHG800(I)-P |
BBO crystal with the size 5 x 5 x 3.0 mm, P-coating @ 400-800nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Yes
$619 |
|
BTC10010-SHG800(I)-P |
BBO crystal with the size 10 x 10 x 0.1 mm, P-coating @ 400-800nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Email/Call |
|
BTC10020-SHG800(I)-P |
BBO crystal with the size 10 x 10 x 0.2 mm, P-coating @ 400-800nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Email/Call |
|
BTC10040-SHG800(I)-P |
BBO crystal with the size 10 x 10 x 0.4 mm, P-coating @ 400-800nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Email/Call |
|
BTC10050-SHG800(I)-P |
BBO crystal with the size 10 x 10 x 0.5 mm, P-coating @ 400-800nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Email/Call
|
|
BTC10100-SHG800(I)-P |
BBO crystal with the size 10 x 10 x 1.0 mm, P-coating @ 400-800nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Email/Call
|
|
BTC5050-SHG800(I)-AR |
BBO crystal with the size 5 x 5 x 0.5mm,
AR@800/400nm,
for Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Yes
$579 |
|
BTC5100-SHG800(I)-AR |
BBO crystal with the size 5 x 5 x 1.0mm,
AR@800/400nm, for Type I SHG of
λ centred @ 800 nm,
mounted in 1" anodized Al holder |
Yes
$599 |
|
BTC5200-SHG800(I)-AR |
BBO crystal with the size 5 x 5 x 2.0mm,
AR@800/400nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Yes |
|
BTC5300-SHG800(I)-AR |
BBO crystal with the size 5 x 5 x 3.0 mm,
AR@800/400nm, for
Type I SHG of
λ
centred @ 800 nm, mounted in 1" anodized Al holder |
Yes |
BBO for Third Harmonic Generation (THG) of Ti
Sapphire Lasers
|
Part No. |
Description |
In stock |
|
BTC5010-THG800(II)-P |
BBO crystal with the size 5 x 5 x 0.1mm, P-coating, for Type II sum frequency mixing of
λ centred @ 800 nm and
λ/2 centred @ 400 nm to obtain
λ/3 (THG), mounted in
1" anodized Al holder |
Email/Call |
|
BTC5020-THG800(II)-P |
BBO crystal with the size 5 x 5 x 0.2mm, P-coating,
for Type II sum frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3 (THG),
mounted in 1" anodized Al holder |
Email/Call |
|
BTC5050-THG800(II)-P |
BBO crystal with the size 5 x 5 x 0.5mm, P-coating, for Type II sum
frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3
(THG), mounted in 1" anodized Al holder |
Email/Call |
|
BTC5100-THG800(II)-P |
BBO crystal with the size 5 x 5 x 1.0mm, P-coating, for Type II sum
frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3
(THG), mounted in 1" anodized Al holder |
Email/Call |
|
BTC5100-THG800(I)-P |
BBO crystal with the size 5 x 5 x 1.0mm, P-coating, for Type I sum frequency
mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3
(THG), mounted in 1" anodized Al holder |
Yes |
|
BTC10050-THG800(II)-P |
BBO crystal with the size 10 x 10 x 0.5mm, P-coating, for
Type II sum frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3 (THG),
mounted in 1" anodized Al holder |
Email/Call |
|
BTC10100-THG800(II)-P |
BBO crystal with the size 10 x 10 x 1.0mm, P-coating, for
Type II sum frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3 (THG),
mounted in 1" anodized Al holder |
Email/Call |
|
BTC5050-THG800(II)-AR |
BBO crystal with the size 5 x 5 x 0.5mm,
AR@800/400/267nm,
for Type II sum frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3 (THG),
mounted in 1" anodized Al holder |
Yes |
|
BTC5100-THG800(II)-AR |
BBO crystal with the size 5 x 5 x 1.0mm,
AR@800/400/267nm,
for Type II sum frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3 (THG),
mounted in 1" anodized Al holder |
Email/Call |
|
BTC5200-THG800(II)-AR |
BBO crystal with the size 5 x 5 x 2.0mm,
AR@800/400/267nm,
for Type II sum frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3 (THG),
mounted in 1" anodized Al holder |
Email/Call |
|
BTC5300-THG800(II)-AR |
BBO crystal with the size 5 x 5 x 3.0 mm,
AR@800/400/267nm,
for Type II sum frequency mixing of
λ
centred @ 800 nm and
λ/2
centred @ 400 nm to obtain
λ/3 (THG),
mounted in 1" anodized Al holder |
Email/Call |
BBO for Fourth Harmonic Generation (FHG) of Ti
Sapphire Lasers
|
Part No. |
Description |
In stock |
|
BTC5010-FHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.1mm, P-coating, for Type I sum frequency mixing of
λ centred @ 800 nm and
λ/3 centred @ 266 nm to obtain
λ/4 @ 200nm
(FHG), mounted in 1" anodized Al holder |
Email/Call |
|
BTC5020-FHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.2mm, P-coating,
for Type I sum frequency mixing of
λ centred @ 800 nm and
λ/3 centred @ 266 nm to obtain
λ/4 @ 200nm
(FHG), mounted in 1" anodized Al holder |
Email/Call |
|
BTC5050-FHG800(I)-P |
BBO crystal with the size 5 x 5 x 0.5mm, P-coating, for Type I sum frequency mixing of
λ centred @ 800 nm and
λ/3 centred @ 266 nm to obtain
λ/4 @ 200nm
(FHG), mounted in 1" anodized Al holder |
Email/Call |
BBO for Noncollinear Parametric Optical Amplifier (NOPA)
|
Part No. |
Description |
In stock |
|
BTC5100-OPA400(I)-P |
BBO crystal with the size 5 x 5 x 1.0mm,
P-coating,
for Type I noncollinear phasematched optical parametric amplification (NOPA)
pumped by ~ 400 nm, mounted in 1" anodized Al holder |
Yes |
|
BTC5200-OPA400(I)-P |
BBO crystal with the size 5 x 5 x 2.0mm,
P-coating,
for Type I noncollinear phasematched optical parametric amplification (NOPA)
pumped by ~ 400 nm, mounted in 1" anodized Al holder |
Yes |
|
BTC5300-OPA400(I)-P |
BBO crystal with the size 5 x 5 x 3.0mm,
P-coating,
for Type I noncollinear phasematched optical parametric amplification (NOPA)
pumped by ~ 400 nm, mounted in 1" anodized Al holder |
Email/Call |
|
BTC5300-OPA520(I)-P |
BBO crystal with the size 5 x 5 x 3.0mm,
P-coating,
for Type I noncollinear phasematched optical parametric amplification (NOPA)
pumped by ~ 520 nm ( frequency-doubled fiber laser ), mounted in 1" anodized Al holder |
Email/Call |
|
BTC5500-OPA520(I)-P |
BBO crystal with the size 5 x 5 x 5.0mm,
P-coating,
for Type I noncollinear phasematched optical parametric amplification (NOPA)
pumped by ~ 520 nm ( frequency-doubled fiber laser ), mounted in 1" anodized Al holder |
Email/Call |
BBO for Second Harmonic Generation (SHG) of
Femtosecond Yb Fiber Lasers
|
Part No. |
Description |
In stock |
|
BTC5050-SHG1040(I)-P |
BBO crystal with the size 5 x 5 x 0.5mm, P-coating, for
Type I SHG of
λ
centred @ 1040 nm, mounted in 1" anodized Al holder |
Email/Call |
|
BTC5100-SHG1040(I)-P |
BBO crystal with the size 5 x 5 x 1.0 mm, P-coating, for
Type I SHG of
λ
centred @ 1040 nm, mounted in 1" anodized Al holder |
Email/Call |
|
BTC5150-SHG1040(I)-AR |
BBO crystal with the size 5 x 5 x 1.5 mm, AR coating, for
Type I SHG of
λ
centred @ 1040 nm, mounted in 1" anodized Al holder |
Yes |
|
BTC5200-SHG1040(I)-P |
BBO crystal with the size 5 x 5 x 2.0mm, P-coating, for
Type I SHG of
λ
centred @ 1040 nm, mounted in 1" anodized Al holder |
Email/Call |
|
BTC5300-SHG1040(I)-P |
BBO crystal with the size 5 x 5 x 3.0 mm, P-coating, for
Type I SHG of
λ
centred @ 1040 nm, mounted in 1" anodized Al holder |
Email/Call |
BBO for Fourth Harmonic Generation (FHG) of
Femtosecond Yb Fiber Lasers
|
Part No. |
Description |
In stock |
|
BTC5050-SHG520(I)-P |
BBO crystal with the size 5 x 5 x 0.5mm, P-coating, for
Type I SHG of
λ
centred @ 520 nm (FHG of 1040nm), mounted in 1" anodized Al holder |
Email/Call |
|
BTC5100-SHG520(I)-P |
BBO crystal with the size 5 x 5 x 1.0 mm, P-coating, for
Type I SHG of
λ
centred @ 520 nm (FHG of 1040nm), mounted in 1" anodized Al
holder |
Email/Call |
|
BTC5150-SHG520(I)-P |
BBO crystal with the size 5 x 5 x 1.5mm, P-coating, for
Type I SHG of
λ
centred @ 520 nm (FHG of 1040nm), mounted in 1" anodized Al holder |
Yes |
|
BTC5200-SHG520(I)-P |
BBO crystal with the size 5 x 5 x 2.0 mm, P-coating, for
Type I SHG of
λ
centred @ 520 nm (FHG of 1040nm), mounted in 1" anodized Al holder |
Email/Call |
Thin crystals with different
dimensions ( aperture up to 20.0mm), cut angles, or coatings are routinely fabricated by Newlight Photonics.
Please contact us for the crystals that best
suit your applications.
Coatings
Protective coating (P-coating): This is a single-layer MgF2 coating.
The primary function of the P-coating is to "protect"
polished BBO surfaces from fogging by
ambient moisture. Also, the P-coating partially reduce reflection from polished surfaces
at a certain wavelength range e.g. 400-800nm. Coating curve:
P-coating.
Anti-reflective coating (AR coating): This is a multi-layer dielectric coating. Single-band, dual-band
or broad-band
AR coatings on BBO surfaces are available for different applications. Coating curves: AR800/400nm,
AR532/266nm,
AR710/355nm (typical).
Uncoated (UC) crystals are
available upon request. These crystals have to be used in a heated mount or
a dry air/nitrogen environment.
Substrate
Crystals of thickness 50µm (0.05mm) or thinner are supplied optically
contacted on UV fused silica substrates with a typical thickness of 2.0mm. Ultrafast
pulses should be incident on the crystal side.
Mount
For customer convenience and protection of thin crystals, all
thin crystals are pre-mounted in a standard 1" ( 25.4mm ) anodized aluminum (Al)
holder. The orientation of a crystal
mounted in a standard holder for second harmonic generation (SHG) can be seen here.
Customer holders ( e.g. holders with openings to steer a probe beam past the
edge of the crystal) are also available at a small cost. A
conventional 1" mirror or lens mount may be conveniently used to tune the crystals for
optimized frequency
conversions.
(Mirror mounts and posts are not included)
Specifications of finished thin BBO crystal
|
Wavefront distortion: |
less than
λ/8 @ 633nm |
|
Clear aperture: |
> 90% central area |
|
Flatness: |
λ/8 @ 633nm |
|
Surface quality: |
10/5 Scratch/Dig per MIL-O-13830A |
|
Parallelism: |
better than 20 arc seconds |
|
Perpendicularity: |
15 arc minutes |
|
Angle tolerance: |
Δθ
< 0.25o,
Δφ < 0.25o |
|
