UV good thermal effect BBO crystallization for SHG 220nm
Hot sale good thermal effect BBO crystallization for SHG
β-Barium borate (β-BaB2O4 or BBO) is a nonlinear optical crystal which combines a number of unique features. These features include broad transmission and phase matching ranges, large nonlinear coefficient, high damage threshold, high quality single crystals and excellent optical homogeneity. Therefore, Beta-BaB2O4 provides an attractive solution for various nonlinear optical applications. Besides, BBO is one of the best candidates for electro-optical applications due to its excellent electro-optical properties.
BBO crystals have been widely used in non-linear optical applications like OPO, OPA, OPCPA and other. Thanks to its large spectral transmission range as well as phase matching, BBO crystals have been applied in second, third, fourth or fifth harmonic generations for high power visible/UV sources and optical parametric conversions for high power broadly tunable sources. Since its broad gain bandwidth overlaps with Ti:Sapphire in 800 nm range, ultra-high power and high contrast laser systems have been built based on the mixed CPA/OPCPA plan.
Features: Hot sale good thermal effect BBO crystallization for SHG
Ø Wide transmission region from 190 nm to 3500nm
Ø Large effective second-harmonic-generation (SHG) coefficient
Ø Good mechanical and physical properties
Ø High damage threshold of 10 J/cm2 for 100 ps pulse-width at 1064 nm
Ø Broad phase-matching range from 409.6 nm to 3500nm
Ø Wide temperature-band width of about 55℃
Ø High optical homogeneity with δn≈10-6/cm
Applications: Hot sale good thermal effect BBO crystallization for SHG
Ø Harmonic generations (up to fifth) of Nd doped lasers
Ø Frequency doubling and tripling of ultrashort Ti:Sapphire and Dye lasers
Ø Frequency doubling of Argon ion and Copper vapour laser radiation
Ø Optical parametric oscillators (OPO) at both Type 1(ooe) and Type 2 (eoe) phase-matching
Ø Electro-optic crystal for Pockels cells
Ø Ultrashot pulse duration measurements by autocorrelation
Chemical and Physical Properties: Hot sale good thermal effect BBO crystallization for SHG
|
Property |
Value |
|
Chemical formula |
BaB2O4 |
|
Crystal structure |
trigonal, 3m |
|
Lattice Parameter |
a=b=12.532Å, c=12.717Å, Z=6 |
|
Mass density |
3.85 g/cm3 |
|
Moh hardness |
4 |
|
Melting point |
About 1095°C |
|
Thermal conductivity |
1.2 W/m/K (⊥c); 1.6 W/m/K (//c) |
|
Thermal expansion coefficient |
α,4x10-6/K; c,36x10-6/K |
|
Birefringence |
negative uniaxial |
Linear Optical Properties: Hot sale good thermal effect BBO crystallization for SHG
|
Property |
Value |
|
Transparency Range |
189 - 3500 nm |
|
Absorption Coefficient: |
α<0.1%/cm @1064nm |
|
Refractive Indices at 1.0642 mm at 0.5321 mm at 0.2660 mm |
ne = 1.5425, no = 1.6551 ne = 1.5555, no = 1.6749 ne = 1.6146, no = 1.7571 |
|
Sellmeier Equations(λ in μm) |
no2(λ) = 2.7359+0.01878/(λ2-0.01822)-0.01354λ2 ne2(λ) = 2.3753+0.01224/(λ2-0.01667)-0.01516λ2 |
Nonlinear Optical Properties: Hot sale good thermal effect BBO crystallization for SHG
|
Property |
Value |
|
SHG Phase Matchable Range |
409.6 ∼ 3500 nm (Type I); 525 ∼ 3500 nm (TypeII) |
|
NLO coefficients |
d11 = 5.8*d36(KDP);d31 = 0.05*d11; d22< 0.05*d11 deff(I)=d31sinθ+(d11cos3φ-d22sin3φ)cosθ deff(II)=(d11sin3φ+d22cos3θ)cos2θ |
|
Therm-Optic Coefficients |
dno/dT =-9.3*10-6/°c dne/dT =-16.6*10-6/°c |
|
Electro-Optic Coefficients |
g11 = 2.7 pm/V, g22, g31<0.1 g11 |
|
Half-Wave Voltage |
48 KV (at 1064 nm) |
|
Damage Threshold at 1.064 mm at 0.532 mm |
5 GW/cm2 (10 ns); 10 GW/cm2 (1.3 ns) 1 GW/cm2 (10 ns); 7 GW/cm2 (250 ps) |
Polishing Specification: Hot sale good thermal effect BBO crystallization for SHG
|
Property |
Value |
|
Orientation Tolerence |
< 0.5° |
|
Thickness/Diameter Tolerance |
±0.05 mm |
|
Surface Flatness |
<λ/8@632 nm |
|
Wavefront Distortion |
<λ/4@632 nm |
|
Surface Quality |
10/5 |
|
Parallel |
30″ |
|
Perpendicular |
15′ |
|
Clear Aperture |
>90% |
|
Chammfer |
<0.2×45° |
|
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Figure 2. OPO tuning curves of BBO (TypeI (ooe))with different pump light, namely 530 nm, 355 nm and 266 nm |
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Figure 3. OPO tuning curves of BBO (TypeII (eoe))with different pump light, namely 530 nm, 355 nm and 266 nm |
Q1: What is phase mismatching?
A1: A group of techniques for achieving efficient nonlinear interactions in a medium. Many phase-sensitive nonlinear processes, in particular parametric processes such as frequency doubling, sum and difference frequency generation, parametric amplification and oscillation, and also four-wave mixing, require phase matching to be efficient. Essentially, this means ensuring that a proper phase relationship between the interacting waves (for optimum nonlinear frequency conversion) is maintained along the propagation direction. Only if that condition is fulfilled, amplitude contributions from different locations to the product wave are all in phase at the end of the nonlinear crystal.
Q2: What is Second harmonic generation (SHG)?
A2: SHG is a nonlinear optical process, in which photons with the same frequency interacting with a nonlinear material are effectively "combined" to generate new photons with twice the energy, and therefore twice the frequency and half the wavelength of the initial photons.
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