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Company Profile

Selling Leads

Shanghai LaserMa Crystals Inc.
[China]

Address:
No.518, Shengwang Road, Xinzhuang, Minhang district Shanghai Shanghai China

Phone:
86-21-69982303

Contact name:
Hellen

Shanghai LaserMa Crystals Inc.

Products

	A-BBO (BaB2O4) Crystal

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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 dno / dT = -9.3 X 10-6 /
dne / dT = -16.6.3 X 10-6 /
Optical homogeneity Δn≈10-6/cm
Damage threshold 1 GW/cm2 at 1064nm500 MW/com2 at 532nm
Hygroscopic susceptibility Low
Thermal expansion coefficients
(25--900) aa = 4 X 10-6 / K
ac = 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 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