LBO

LBO(LiB3O5 or Lithium Triborate)is a nonlinear optical crystal.For frequency doubling(SHG)/tripling(THG)of Nd:YAG,Nd:YLF,Nd:YVO4 lasers,LBO crystal is one of the most useful nonlinear optical material in ultraviolet and visible laser applications.

Classification:

Nonlinear Crystals

Detailed introduction

PRODUCT FEATURE

Broad transparency range from 160nm to 2600nm(see Figure 1);

High optical homogeneity(δn≈10-6/cm)and being 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;

Spectral NCPM near 1300nm.

Spot on Sale
Application: SHG@1064 nm, Type 1
Code	Size	Theta(θ)	Phi(φ)	Coating	Unit Price(FOB)	Delivery
LBO-01	3×3×5mm	90	10.4	AR/AR-1064&532nm	$29.90	5 days
LBO-02	3×3×5mm	90	11.6	AR/AR-1064&532nm	$29.90	5 days
LBO-03	3×3×8mm	90	10.4	AR/AR-1064&532nm	$39.90	5 days
LBO-04	3×3×8mm	90	11.6	AR/AR-1064&532nm	$39.90	5 days
Application: THG@1064nm , Type 2
Code	Size	Theta(θ)	Phi(φ)	Coating	Unit Price(FOB)	Delivery
LBO-05	3×3×15mm	42.3	90	S1 : AR-1064&532nm, S2 : with Brewster angle 57.4 deg cut	$89.90	5 days
LBO-06	3×3×15mm	44	90	S1 : AR-1064&532nm, S2 : with Brewster angle 57.4 deg cut	$89.90	5 days

Specifications
Dimension Tolerance	(W ± 0.1mm) × (H ± 0.1mm) × (L ± 0.2mm/0.1mm)
Angle Tolerance	∆θ< ± 0.25°; ∆φ< ±0.25°
Parallelism	10 ″
Perpendicularity	5 ′
Clear Aperture	Central 95% of the diameter
Surface Quality (Scratch/Dig)	10/5（MIL-PRF-13830B）
Flatness	λ/10 @ 633nm
Transmitted Wavefront Distortion	λ/10@ 633nm
Anti-Reflection Coating	According to customer requirements

Chemical and Structural Properties
Crystal Structure	Orthorhombic, Space group Pna21, Point group mm2
Lattice Parameter	a=8.4473Å,b=7.3788Å,c=5.1395Å,Z=2
Melting Point	About 834℃
Mohs Hardness	6
Density	2.47g/cm3
Thermal Conductivity	3.5W/mK
Thermal Expansion Coefficients	αx=10.8×10^-5/K, αy=-8.8×10^-5/K,αz=3.4×10^-5/K

Optical and Nonlinear Optical Properties
Transparency Range	169nm ~ 2600 nm
SHG Phase Matchable Range	551 ~ 2600nm (Type I);790-2150nm (Type II)
Therm-optic Coefficient ( λ in μm)	dnx/dT=-9.3×10^-6
	dny/dT=-13.6×10^-6
	dnz/dT=(-6.3-2.1λ)×10^-6
Absorption Coefficients	<0.1%/cm at 1064nm;<0.3%/cm at 532nm
Angular Acceptance:	52 mrad·cm
Walk-off Angle	0°
NLO Coefficients	d_eff（I）=d₃₂cosΦ（Type I in XY plane）
	d_eff（I）=d₃₁cos2θ+d₃₂sin2θ（Type I in XZ plane）
	d_eff（II）=d₃₁cosθ（Type II in YZ plane）
	d_eff（II）=d₃₁cos2θ+d₃₂sin2θ（Type II in XZ plane）
Non-vanished NLO Susceptibilities	d₃₁=1.05 ± 0.09 pm/V
	d₃₂=-0.98 ± 0.09 pm/V
	d₃₃= 0.05 ± 0.006 pm/V
Sellmeier Equations (λ in μm)	nx2=2.454140+0.011249/(λ2-0.011350)-0.014591λ2-6.60×10-5λ4
	ny2=2.539070+0.012711/(λ2-0.012523)-0.018540λ2+2.0×10-4λ4
	nz2=2.586179+0.013099/(λ2-0.011893)-0.017968λ2-2.26×10-4λ4