pk10开奖记录

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pk10开奖记录 LiNbO3

LiNbO3 crystal combines low cost, good mechanical and physical properties as well as high optical homogeneity. Therefore, LiNbO3 wedges have been widely used in fiber isolators and circulators.
pk10开奖记录


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CASTECH provides:

       •  50,000 to 100,000 pcs/month of LiNbO3 wedges used for fiber optical isolators and circulators;
       •  Reliable Delivery;
       •  Strict quality control;
       •  Technical support;
       •  Very competitive price.

 

Table 1. Basic Properties of LiNbO3

Crystal StructureTrigonal, Space group R3c, Point group 3m
Melting Point1253℃
Mohs Hardness5
Density4.64g/cm3
DeliquescenceNone
Optical Homogeneity~5×10-5/cm
Transparency Range420nm-5200nm
Absorption Coefficient~0.1%/cm @ 1064nm
Refractive indices at 1064nmne  = 2.146, no = 2.220 @ 1300 nm
ne  = 2.156, no = 2.232 @ 1064 nm
n= 2.203, no = 2.286 @ 632.8 nm
Thermal Expansion Coefficients(at 25℃)//a, 2.0×10-6/K
//c, 2.2×10-6/K
Thermal Conductivity Coefficient38 W/m/K at 25℃
Thermal Optical Coefficientdno/dT=-0.874×10-6/K at 1.4 μm
dne/dT=39.073×10-6/K at 1.4 μm
The Sellmeier equations(λ in μm)no2 = 4.9048 + 0.11768/(λ2-0.04750) - 0.027169λ2
ne2 = 4.5820 + 0.099169/(λ2-0.04443) - 0.02195λ2

 

Table 2. Specifications of LiNbO3 wedges

Aperture1.0×1.0 mm to  4×4 mm2
Dimension tolerance±0.05mm
Wedge Angle tolerance±0.1°
Optical axis orientation±0.5°
Flatnessλ/4 @ 632.8nm
Surface Quality20/10
AR-coatingR<0.2% @ 1550nm±40nm
Standard Size1.25mm×1.25mm×0.5mm with 13°  or 15° wedge,phi=22.5°

 

Note: Other sizes and coatings are available upon request.

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