a-BBO (BaB₂O₄) Crystal

High temperature phase of a-BBO Crystal(BaB₂O₄₎ is an excellent birefringent crystal. It is characterized by large birefringent coefficient and wide transmission window ranged from 189nm to 3500nm. Because of its high chemical stability and medium hardness, a-BBO is easy to be fabricated into many kinds of optical components.

Main Specifications:

Diameter:	max 40~50mm
Length:	max 25~35mm
Surface quality:	20/10 scratch/dig
Beam deviation:	< 3 arc min
Optical axis orientation:	+/-0.5o
Flatness:	l/4 @632.8nm
Transmission wavefront distortion:	<λ/2 @632.8nm
Coating:	upon customer's specification

Note:
To inquiry or order -BBO birefringent crystals, please provide specification as listed in the above.

Physical and optical properties:

Transparency range	189-3500nm
Density	3.85g/cm³
Therm-optic coefficients	dn_o / dT = -9.3 X 10^-6 / �C dn_e / dT = -16.6.3 X 10^-6 / �C
Optical homogeneity	Δn≈10-6/cm
Damage threshold	1 GW/cm2 at 1064nm500 MW/com2 at 532nm
Hygroscopic susceptibility	Low
Thermal expansion coefficients (25�C--900�C)	a_a = 4 X 10^-6 / K a_c = 4 X 10^-6 / K
Linear absorption coefficients	a<0.005cm-1 from 300nm to 2300nm
Refractive indices, birefringence (Δn=ne-no) and walk-off angle at 45�C	ne=1.58462, no=1.65790, Δn=-0.073282; ρ=-4.9532o at 1064nm
	ne=1.60206, no=1.67755, Δn=-0.075491; ρ=-5.0407o at 532nm
	ne=1.67190, no=1.76171, Δn=-0.089805; ρ=-5.6926o at 266nm

Crystals >> a-BBO(BaB2O4) Crystal, a-BBO is an excellent Birefrigent Crystal

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a-BBO (BaB₂O₄) Crystal