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E-mail: sales@phosctech.com
Website: www.phosctech.com
 
BBO Crystal  

 

PHOSCTECH offers high grade flux-method BBO crystals with good homogeneity, low defects and low absorption.

 

PHOSCTECH’s BBO Crystals Feature:

        ·Broad phase-matchable second-harmonic-generation(SHG) range from 409.6nm to 3500nm
        ·Wide transmission region from 190nm to 3500nm
        ·Large effective SHG coefficient
        ·High damage threshold of 10 m W/ cm2 for 100 ps pulse-width at 1064nm
        ·High optical homogeneity with Dn 10-6 / cm2
        ·Wide temperature bandwidth of about 55℃ (for type I SHG 1064nm)
        ·Good mechanical and physical properties.

 

PHOSCTECH’s BBO Crystals Have Been Applied to:

        ·Second, third, fourth and fifth harmonic generations of Nd: lasers
        · Frequency-doubling, -tripling and -mixing of dye lasers
        · Second, third and fourth harmonic generations of Ti: Al2O3 and Alexandrite lasers
        · Optical parametric amplifiers (OPA) and optical parametric oscillators (OPO)
        · Frequency-doubling and -tripling of ultra short pulse Ti: Sapphire and dye lasers
        · Frequency-doubling of Argon ions, Cu-vapor and ruby lasers
        · External intra-cavity SHG

 

 

Capability:

Attribute

Commercial

High Precision

Dimensions

L=0.3mm to 25mm
Size: Up to 15x15x15 mm3

Wavefront Distortion

λ/8

λ/8

Orientation

±0.5°

±0.2°

End-faces Configuration

Flat

Dimension Tolerance

±0.1mm

±0.01mm

Surface Quality

20-10 scratch and dig

10-5 scratch and dig

Flatness

λ/8

λ/8

Parallelism

20"

10"

Perpendicularity

15'

5'

Note:Protective coating is strongly recommended due to high hygroscopic susceptibility of BBO crystals.
 

 

Basic Properties:


1.Structural and Physical Properties

Chemical formula  β-BaB2O4
Crystal Structure trigonal , space group R3c 
Cell Parameters a=b=12.532Ă,c=12.717 ?,Z=6
Melting Point 1095±5℃
Transition Temperature 925±5℃
Optical Homogeneity Δn≈10-6/cm
Mohs Hardness 4.5
Density  3.85g/cm3
Linear Absorption Coefficients α<0.001cm-1 (λ=1064nm)
α<0.01cm-1 (λ=532nm)
α<0.5cm-1 (λ=255nm)
Hygroscopic Susceptibility Low
Resistivity >1011ohm-cm
Relative Dielectric Constant εT11/εo:6.7, εT33/εo:8.1,Tan δ,<0.001
Thermal Expansion Coefficients(in the range of 25℃-900℃)Thermal Conductivity a, 4×10-6/K
c, 36×10-6/K
┴ c , 1.2w/m/k; ║ c, 1.6 w/m/k

 

2.Linear Optical properties

Transparency Range: 189-3500nm,See Transparency Curve
 Refractive Indices:
  at 1.0642 μm ne=1.5425, no=1.6551
  at 0.5321 μm ne=1.5555, no=1.6749
  at 0.2660 μm ne=1.6146, no=1.7571
 Therm-Optic Coefficients:
  dno/dT=-9.3×10-6/℃ dne/dT=-16.6×10-6/℃
 Sellmeier Equations:
  N2o(λ)=2.7359+0.01878/(λ2-0.01822)-0.01354×λ2 (λ in μm, T=20℃)
  N2e(λ)=2.3753+0.01224/(λ2-0.01667)-0.01516×λ2 (λ in μm, T=20℃)

 

3.NonLinear Optical Properties
      Phase-Matchable Output Range: 189-1750nm
      NLO Coefficients: d11=5.8×d36(KDP)
      Electro-optic Coefficients:   d31=0.05×d11, d22<0.05×d11
                                                        γ11=2.7pm/V, γ22 , γ31<0.1γ11
      Half-Wave Voltage: 48KV(at 1064nm)
      Damage Threshold:
           at 1.064 μm 5GW/cm2(10ns); 10GW/ cm2(1.3ns);
           at 0.532 μm 1GW/ cm2(10ns); 7GW/ cm2(250ps);
           at 0.266 μm 12MW/cm2(8ns).

   
 

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Tel:+86-(0)591-87846955 +86-(0)591-87846952 Fax: +86-(0)591-87856157 Website:www.phosctech.com E-mail: sales@phosctech.com