α-Bbo α Barium Metaborate Optical Crystal 189nm-3500nm

Price Negotiable

Price: Negotiable

MOQ: Negotiated

Delivery Time: 3-4 weeks

Brand: ZCQ

Product Description

α-BBO α Barium metaborate crystal

Barium metaborate (α-BBO) crystal is an excellent birefringent material with excellent optical properties and excellent transmittance in both ultraviolet and mid infrared. α-BBO crystals have good internal quality, low absorption, and are widely used in high extinction ratio and deep ultraviolet laser systems due to their excellent ultraviolet transmittance. They are mainly processed into Glan polarization prisms, polarization beam splitters, compensators, and so on.

Application: Gran prism, polarization beam splitter, compensator, etc

Specifications:

Diameter:	Max 50m
Length:	Max 35mm
Surface Quality:	better than 20/10 scratch/dig
Beam Deviation:	< 3 arc min
Optical Axis Orientation:	+/-0.2deg
Flatness:	< λ/4 @632.8nm
Wavefront Distortion:	< λ/2 @632.8nm
Coating:	Coating upon Request

Properties:

Transmitting range	189nm~3500nm
Density	3.85g/cm3
Therm-Optic Coefficients	dno/dT=-9.3 x 10-6/ °C dno/dT=-16.6x10-6/ °C
Optical Homogeneity	Δn≈10-6/cm
Mohs Hardness	4.5
Damage Threshold	1GW/cm2 at 1064nm 500MW/cm2 at 532nm
Hygroscopic Susceptibility	Low
Thermal Expansion Coefficients	αa=4x10-6
(25 °C - 900 °C)	αa=4x10-6
Linear Absorption Coefficients	a<0.005cm-1 from 300nm to 2300nm
Refractive Indices, Birefringence(△n=ne-no) and wal-off Angle at 45 °C(ρ)	ne=1.58462,no=1.65790,Dn=-0.073282;ρ=-4.9532° at 1064nm ne=1.60206,no=1.67755,Dn=-0.075491;ρ=-5.0407° at 532nm ne=1.67190,no=1.76171,Dn=-0.089805;ρ=-5.6926° at 266nm
Sellmeier equation(l in μm)	no2=2.7471+0.01878/( λ2-0.01822)-0.01354 λ2 ne2=2.37153+0.01224/( λ2-0.01667)-0.01516 λ2