LiNbO3
Quantity : 999
Lithium Niobate(LiNbO3) Crystal is widely used as frequency doublers for wavelength >1um and optical parametric oscillators (OPO) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Due to its large Electro-Optic(E-O) and Acousto-Optic(A-O) coefficients, LiNbO3 is also widely used as electro-optic modulator and Q-switch for Nd: YAG, Nd: YLF and Ti: Sapphire lasers as well as modulator for fiber optics, etc.
Crysmit can also provide MgO: LiNbO3 and Fe: LiNbO3.
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Crystal Structure
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Trigonal, space group R3c
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Cell Parameters
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a=0.515,c=13.863,Z=6
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Melting Point
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1255 +/-5℃
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Curie Point
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1140 +/-5℃
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Mohs Hardness
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5
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Density
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4.64 g/cm 3
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Absorption Coefficient
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~ 0.1%/cm @ 1064 nm
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Solubility
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insoluble in H2O
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Relative Dielectric Constant
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εT11/ε0: 85
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εT33/ε0: 29.5
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Thermal Expansion Coefficients at 25℃
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||a, 2.0 x 10 -6/K @ 25℃
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||c, 2.2 x 10 -6/K @ 25℃
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Thermal Conductivity
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38 W /m /K @ 25℃
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Transparency Range
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420 - 5200 nm
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Refractive Indices
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n e = 2.146, n o = 2.220 @ 1300 nm
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n e = 2.156, n o = 2.322 @ 1064 nm
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n e = 2.203, n o = 2.286 @ 633 m
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Optical Homogeneity
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~ 5 x 10 -5 /cm
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Sellmeier Equations ( l in mm)
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n o 2 (l ) = 4.9048+0.11768/(l2- 0.04750) - 0.027169l2
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n e 2 ( l) = 4.5820+0.099169/( l2 - 0.04443) - 0.021950 l2
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Material
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Laser grade LiNbO3
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Orientation
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±0.5°
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Dimensional Tolerance
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±0.1mm
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Surface Quality
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20/10 Scratch/Dig per MIL-PRF-13830B
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Flatness
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λ/8 @ 633 nm
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Perpendicularity
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5 arc min
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Parallelism
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better than 20 arc sec
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Clear Aperture
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> Central 90%
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AR Coating
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AR coating with R < 0.2% at center Wavelength
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Contact : amiee ye,
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