导航菜单
 
产品详情
LBO crystal
型号:
• broad transparency range from 160nm to 2600nm.
• high optical homogeneity (dn»10-6/cm) and free of inclusion;
• relatively large effective SHG coefficient (about three times that of KDP);
• high damage threshold;
• wide acceptance angle and small walk-off;
• type I and type II non-critical phase matching (NCPM) in a wide wavelength range;

Lithium triborate (LiB3O5 or LBO) is an excellent nonlinear optical crystal. It combines a wide transparency range (210-2300 nm), moderate nonlinear coupling, relatively high damage threshold and good chemical and mechanical properties. LBO crystals have phase matchable conditions for SHG and THG of infrared lasers, using either Type I or Type II interactions.
LBO has non-critical phase matching conditions (NCFM) for Type I SHG at 1000-1300nm. In this case, LBO is free of walk-off limitations and, therefore, long LBO crystals can be used. LBO crystals are free of the grey track effect and as a result, are very useful in high power green lasers.
Physical and Chemical Properties

 

Crystal Structure

Orthorhombic, Point group mm2, Space group Pna21

Lattice Parameters

 a=8.4473Å, b=7.3789Å, c=5.1405Å, z=2

Density

 2.47 g/cm3

Mohs Hardness

 5.5

Melting Point

 835 ±5°C

Optical Homogeneity

Dn~10-6/cm

Absorption Coefficient

< 0.03%/cm @1.064μm, < 0.1%/cm @0.532μm

Thermal Conductivity

 3.5 W/m/K

Thermal Expansion Coefficient

ax=10.8x10-5/K, ay=-8.8x10-5/K, az=3.4x10-5/K

Hygroscopisity

 Non

Specifications

Dimensional Tolerance

(W±0.1mm) x (H±0.1mm) x (L+0.2/-0.1 mm) L>2mm

(W±0.1mm) x (H±0.1mm) x (L±0.1 mm) L<2mm

Absorption

<0.002%@1064nm, <0.01%@532nm

Cutting Angle Tolerance

Dq< ±0.2°, Df< ±0.2°

Wavefront Distortion

<λ/8 @632.8 nm

Chamfer

0.15 mm x 45°

Perpendicularity

< 5 arc min

Parallelism

< 20 arc sec

Flatness

<λ/10 @633 nm

Scratch/Dig  

10/5 per MIL-PRF-13830B

Clear Aperture

> Central 90%

Antireflection Coating

R < 0.2% @1064nm,R < 0.5% @532nm,R<3%@355nm

 

脚注信息
 Copyright(C)2013-2014 Tonmin inc Powered by:Tonmin Links:LED Light Bar