ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
ANHUI CRYSTRO CRYSTAL MATERIALS CO., LTD. INNOVATOR FOR MAGNETO OPTICAL CRYSTALS
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SAW Grade LiNbO3 Single Crystal For Acousto-optic Devices
Crystro's LiNbO3 crystal is grown by Czochralski method.Max diameter reach 4inch,it's now the biggest size in this filed,we can custom size and specs ,rougness<0.5nm.Magneto-optical single crystals like GGG,SGGG,TGG,TSAG are our main products.
LiNbO3 is a nonlinear optical grade crystal, it widely used in parametric oscillators, frequency doubling, acousto-optic devices, optical modulators. MgO-doped LiNbO3 can effectively increase the damage threshold of the LiNbO3 crystal.
Both pure LN and MgO doped LN (MgO:LN) crystals with gold coatings on side faces for electrodes are available
MgO doped LiNbO3 (MgO:LN) has similar linear optical properties to pure LiNbO3, but the photorefractive damage threshold is much higher.
Crystro provides:
LiNbO3 Crystal Applications:
1. Pockels Cells
2. Q-switches
3. Phase modulators
4. Surface acoustic wave(SAW) wafers
Basic Properties of LiNbO3:
| Growth method | Czochralski method |
| Crystal structure | Trigonal system |
| Lattice constant | a=b=5.148Å c=13.863 Å |
| Melting point | 1250℃ |
| Curie temperature | 1142 ℃ |
| Density | 4.64 g/cm3 |
| Mohs Hardness | 5 |
| Spectral transmission range | 0.4-2.9um |
| Refractive index | No=2.286 ne=2.203 (632.8nm) |
| Nonlinear coefficient | D33=34.45, d31=d15=5.95, d22=13.07 (PMV-1) |
| Electro-optic coefficient | γ13=8.6,γ22=3.4,γ33=30.8,γ51=28.0,γ22=6.00(pmv-1) |
| Spectral transmission range | 370 - 5000nm >68% (632.8nm) |
| Thermal expansion coefficient | A11=15.4 x 10-6/k, a33=7.5 x 10-6/k |
| Optical grade LiNbO3 | SAW grade LiNbO3 | |
| Orientation | X-cut, Z-cut (+/-0.2°) | Z-cut, Y-cut, |
| Y-cut 36° off, Y-cut 64° off, Y-cut 128° off | ||
| Primary Orientation Flat | 22mm+/-2mm (3-inch) | 22mm+/-2mm (3-inch) |
| 32mm+/-2mm (4-inch) | 32mm+/-2mm (4-inch) | |
| Standard Size | φ3"(76.2mm) +/-0.3mm | φ3" (76.2mm) +/-0.3mm |
| φ4" (100mm) +/-0.3mm | φ4" (100mm) +/-0.3mm | |
| φ6" (150mm) +/-0.3mm | φ6" (150mm) +/-0.3mm | |
| 10x10mm +/-0.1mm | 10x10mm +/-0.1mm | |
| Or others | Or others | |
| Thickness | 500μm +/-20μm | 500μm +/-20μm |
| 1000μm +/-20μm | 1000μm +/-20μm | |
| 350μm +/-20μm | 350μm +/-20μm | |
| Polishing | Single or Both side polished | Single or Both side polished |
| Surface Finish: 20/10 or 10/5 | Surface Finish: 20/10 or 10/5 | |
| TTV | ≤10um | ≤10um |
| Curie temperature | 1142℃ +/-0.7℃ | 1142℃ +/-3℃ |
| Edge chamfer | Edge rounding | Edge rounding |
