Name: | Piezoelectric Crystals YCOB | Surface Flatness: | </8@632nm |
---|---|---|---|
Surface Quality: | 10/5 | Perpendicular: | 15 |
High Light: | lithium tantalate wafers,yttrium calcium oxy borate |
Product Details
Description
Yttrium Calcium Oxyborate (YCa4O(BO3)3 or YCOB) is a good nonlinear crystal which is widely used in high power laser system. YCOB crystals have good nonlinear optical properties, such as larger effective NLO susceptibilities, larger Temperature Acceptance, relatively high damage threshold, less parametric luminescence, smaller thermal expansion coefficient, less anisotropy and high temperature piezoelectric properties. Besides, it is easy to grow large size crystal with high quality. YCOB crystal is suitable for applications in high energy and high power laser fieldsincluding second-harmonic generation (SHG), third-harmonic generation (THG), optical parametric oscillator (OPO), optical parametric amplification (OPA),optical parametric chirped-pulse amplification (OPCPA). Another application is in the field of piezoelectric devices at high temperature. YCOB crystal has very high electric resistivity that can be fabricated as piezoelectric sensors working at the temperature as high as 1000C in aerospace engines.
Features
Applications
Specification
Polishing Specification for Laser Grade |
|
Orientation Tolerence |
< 0.5° |
Thickness/Diameter Tolerance |
±0.05 mm |
Surface Flatness |
</8@632nm |
Wavefront Distortion |
</4@632nm |
Surface Quality |
10/5 |
Parallel |
30 |
Perpendicular |
15 |
Clear Aperture |
>90% |
Chammfer |
<0.2×45° |
Crystal Properties |
|
Crystal Structure |
Monoclinic, Point group m |
Lattice Parameter |
a = 8.0770 , b = 16.0194 , c = 3.5308 , = 101.167, Z = 2 |
Melting Point |
About 1510 ℃ |
Mohs Hardness |
6 ~ 6.5 |
Density |
3.31 g/cm3 |
Thermal Conductivity |
2.6 W/m/K (X), 2.33 W/m/K (Y), 3.1 W/m/K (Z) |
Thermal Expansion Coefficient |
ax = 10.810-5/K, ay = -8.810-5/K, az = 3.410-5/K |
Phase Match Parameters |
|||
Application |
Theta |
Phi |
deff [pm/V] |
2nd Harmonic Generation (SHG) |
30.8° |
180° |
1.14 |
3rd Harmonic Generation (THG) |
106° |
77.2° |
NA |
Optical Parametric Amplifier (OPA) |
28° |
180° |
1.32 |