BiBO crystal features a large effective nonlinear coefficient (3.5 - 4 times higher than that of LBO, 1.5 - 2 times higher than that of BBO, ~ 8 times higher than that of KDP), high damage threshold and inertness to moisture. In particular it has been identified over the past years to be an efficient crystal for producing green or blue light through second harmonic generation (SHG) of Nd lasers or ultrafast TiS lasers. It also has an important application in efficient generation of ultrabright entangled photons through blue pumped spontaneous parametric down conversions (SPDC).
BiBO products on this page are thick crystals (T > 3 mm) for applications with picosecond (ps), nanosecond (ns), or long pulse/CW lasers.
For thin BiBO products (T =< 3 mm) developed for frequency conversions of ultrafast femtosecond (fs) lasers, please visit thin BiBO crystals.
For BiBO products (including paired BiBO crystals) developed for spontaneous down conversions (SPDC), please visit SPDC components.
|Part No.||Description||Application||Thickness||Price||Availability||Add to Cart|
Newlight's BiBO features:
|Broad transparent range from 286 nm to 2500 nm|
|High optical homogeneity (δn ~ 10-6 /cm), free of inclusions|
|Large effective SHG coefficient (~ 9 times that of KDP)|
|High damage threshold|
| Inertness to moisture
Structural and Physical Properties:
|Crystal Structure||Monoclinic, Point group 2|
|Lattice Parameters||a=7.116 Å, b=4.993 Å, c=6.508 Å, β=105.6°, Z =2|
|Mohs Hardness||5 - 5.5|
|Specific Heat||0.5 J/gm-K at 330 K|
|Thermal Expansion||4.8x10-5[X], 4.4x10-6[Y], -2.69x10-5[Z]|
|NLO Coefficients||d11=2.53 pm/V, d12=2.93 pm/V, d13=-1.93 pm/V, d14=1.63 pm/V
d25=1.67 pm/V, d26=3.48 pm/V
d35=-1.58 pm/V, d36=1.67 pm/V
(defined in the principal optical axes xyz: nz>ny>nx, x-1, y-2, z-3)
|Refractive Indicesfirstname.lastname@example.org nm: nx = 1.7874, ny = 1.8190, nz = 1.9620
@1079.5 nm: nx = 1.7569, ny = 1.7835, nz = 1.9166
(λ in µm)
|SHG and THG for middle and high power Nd: lasers at 1064 nm|
|SHG and THG for high power Nd: lasers at 1342 &1319 nm for red and blue laser|
| SHG for the Nd: Lasers at 914nm & 946nm for blue laser. Over 2.8 W CW blue
@473 nm was obtained from frequency doubling of 4.6 W CW Nd:YAG
@ 946 nm with BiBO
|Optical Parametric Amplifiers (OPA) and Oscillators (OPO)|
Comparison of Nonlinear Optical Properties of Crystals for SHG @ 946 nm:
Specifications of BiBO components:
|Wavefront Distortion:||Better than λ/6 @ 633 nm|
|Dimension Tolerance:||(W+/-0.1 mm) x (H+/-0.1 mm) x (L+0.2/-0.1 mm)|
|Clear Aperture:||> 90% central area|
|Flatness:||Better than λ/6 @ 633 nm|
|Surface Quality:||Scratch/Dig 20/10 per MIL-O-13830A|
|Parallelism:||Better than 30 arc seconds|
|Perpendicularity:||5 arc minutes|
|Angle Tolerance:||Δθ < 0.25, Δφ < 0.25|
Single-band, dual-band or broad-band AR coatings on BiBO crystals are available upon request.
Coating curves (Typical):
AR800/400 nm, AR1064/532 nm, AR1550/775 nm, AR1850/925 nm, BBAR centered ~ 700 nm
OD 1" crystals can be mounted in a conventional 1" mirror mount to be angle tuned for phase matching ( as shown to the right).
BiBO Crystal Handling:
The susceptibility to moisture of BiBO is very low. However, users are advised to provide dry conditions for both use and storage of BiBO to prolong the lifetime. Water condensation on crystal surfaces should be absolutely avoided at any time.
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