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LBO Lithium Triborate

Lithium triborate (LiB3O5or LBO) is a new type of nonlinear crystal with excellent optical performance, widely used high power ultraviolet frequency multiplier, with wide light transmittance band, high damage threshold, large acceptance angle, good chemical and mechanical properties.

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Main Feature

Wide light transmittance band range (160-2600nm)

Good optical uniformity (δ n 10-6/ cm), less internal envelope

High frequency conversion efficiency (3 times that of KDP crystal)

High damage domain value (1053nm laser with 1.3 nm up to 10GW / cm2)

Wide reception angle and small discrete angle

Class I, class II non-critical phase matching (NCPM)

Spectral noncritical phase matching (NCPM) is close to 1300nm

Typical Application

1. Doubling frequency:

Nd: YAG laser for medical and industrial use

High-power Nd: YAG and Nd: YLF laser for scientific and military applications

Nd:YVO4, Nd: YAG and Nd: YLF laser pumping

Ruby, Ti: Sappire and Cr: LiSAF laser

2. Triplex frequency:

Nd: YAG and Nd: YLF laser

Optical Parametric amplifier (OPA) and optical Parametric oscillator (OPO)

High power 1340nm Nd: double, triple frequency of YAP laser

Material Properties

Crystal structure	Orthorhombic crystal system, space group Pna 21, The dot group, mm2
Crystal lattice parameters	a=8.4473Å,b=7.3788Å,c=5.1395Å,Z=2
Melting point	About 834℃
Mohs hardness	6
Density	2.47g/cm3
Coefficient of expansion due to heat	αx=10.8x10-5/K, αy=-8.8x10-5/K,αz=3.4x10-5/K
Absorbance index	＜0.1%/cm @1064nm