铌酸锂LiNbO3)晶体被广泛用作1000nm以上波长的倍频和1064nm泵浦光的光参量放大,也可做准相位匹配. 但是,应用LiNbO3晶体对Nd:YAG激光进行倍频时,由于光折变效应的存在,大大降低了它的抗光伤阈值。高掺杂MgO(MgO掺杂浓度大于5mol%)铌酸锂晶体与纯铌酸锂晶体相比,其抗光损伤能力提高两个数量级。同时,铌酸锂晶体也被广泛应用于光电调节器及波导材料,和用作Nd:YAG,Nd:YLF和掺Ti的蓝宝石激光Q开关. Terahertzlabs可为上述用途提供各种规格的高质量,大尺寸的铌酸锂晶体. 掺杂铁后的铌酸锂晶体,其光折变性能比纯铌酸锂提高500倍,并能储存多个全息图,从而成为一种重要的激光全息照相用记录材料;
主要特点:
Large Electro-Optic (E-O) coefficients
Large Acousto-Optic (A-O) coefficients
Typical Applications:
Frequency doublers
Optical parametric oscillators (OPO)
Quasi-phase-matched (QPM) device
Q-switches and modulator
LiNbO3是非线性光学级晶体,广泛应用于参量振荡器、倍频、声光器件、光学调制器。
主要性能参数 | |||
生长方法 | 提拉法 | ||
晶体结构 | 三方 | ||
晶格常数 | a=b=5.148?160;160;160;160; 160; c=13.863 ? | ||
熔点(℃ ) | 1250 | ||
居里温度 | 1140℃ | ||
密度(g/cm 3 ) | 4.64 | ||
硬度 | 5 ( mohs ) | ||
光谱透过波长 | 0.4-2.9um | ||
折射率 | no=2.286 ne=2.203160; ( 632.8nm ) | ||
非线性系数 | d33=34.45 , d31=d15=5.95 , d22=13.07160; ( pmv-1 ) | ||
电光系数 | γ13=8.6 , γ22=3.4 , γ33=30.8 , γ51=28.0 , γ22=6.00 ( pmv-1 ) | ||
光谱透过范围160;160; 透过率 | 370 ~ 5000nm >68%160; ( 632.8nm ) | ||
热膨胀系数 | a11=15.4×10-6/k , a33=7.5×10-6/k | ||
尺寸 | 任何等于或小于?3″ | 表面质量 | 10/5 |
尺寸公差 |
Z 轴:160; ±0.3mm160; 160; X 轴、 Y 轴: ±0.1mm |
平 面 度 | v8160; ( 632.8nm ) |
倒 角 | 小于0.5mm , 45 o±5 o | 镀 膜 | R<0.2% ( 1064nm ) |
晶向精度 |
Z 轴:160; 5′160; 160; X 、 Y 轴: <10′ |
波前畸变 | |
平 行 度 | <10′ | 消 光 比 | >400:1(633nm)φ6mm 光束 |
损伤阈值 | 200 MW/cm2 |
Dimensional Tolerance | ±0.1mm |
Angle Tolerance | ±0.5deg |
Wavefront Distortion | <λ/4 @ 633nm |
Surface Flatness | <λ/8 @ 633 nm |
Surface Quality | 20/10 Scratch and Dig |
Parallelism | < 20 arc seconds |
Perpendicularity | < 5 arc minuntes |
Clear Aperture | > Central 90% |
AR-Coating | dual waveband AR coating @1064/532 nm on both surfaces, with R < 0.2% @ 1064 nm and R < 0.5% @ 0.532 nm per surface |
Part No. | Dimension | Cut | Coating | Electrode |
LNO001 | 3x3x15mm | Z-cut | AR/AR@1064nm | Au on X face |
LNO002 | 4x4x15mm | Z-cut | AR/AR@1064nm | Au on X face |
LNO003 | 6x6x25mm | Z-cut | AR/AR@1064nm | Au on X face |
LNO004 | 9x9x25mm | Z-cut | AR/AR@1064nm | Au on X face |
Part No. | Dimension | End faces |
LNO101 | 50x50x1mm | One surface polished, reverse fine ground |
Part No. | Dimension | Thickness | End faces |
LNO201 | 76.2mm | 0.5mm |
One surface polished, reverse fine ground 160; |