LiNbO3

LiNbO3

LiNbO3 crystal has low cost, good mechanical and physical properties as well as high optical homogeneity. It has been applied in fiber optics with the low price, stable quality.The same, LiNbO3 Crystal is widely used as frequency doublers for wavelength > 1mm and optical parametric oscillators (OPOs) 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 crystal is the most commonly used material for Pockel Cells, Q-switches and phase modulators, waveguide substrate, and surface acoustic wave (SAW) wafers, etc. 
The large quantity  LiNbO3 wedges  and compensators for OEM customers are available from Newphotons.

Basic Properties of LiNbO3:
Crystal Structure:Trigonal, Space group R3C, Point group 3m
Cell Parameters:a=5.148Å , c=13.863Å
Melting Point:1253° C
Curie Temperature:1140° C
Mohs Hardness:5
Density:4.64 g/cm3
DeliquescenceNone
Optical Homogeneity~ 5x10-5/cm
Transparency Range420nm-5200nm
Absorption Coefficient:~0.1%/cm @ 1064nm
Refractive indices at 1064nm:ne= 2.146, no = 2.220 @ 1300 nm
ne = 2.156, no = 2.232 @ 1064 nm
ne = 2.203, no = 2.286 @ 632.8 nm
Thermal Expansion Coefficients ( at 250C)//a, 2.0x10-6/K
//c, 16.7x10-6/K
Thermal Conductivity Coefficient:38 W/m/K at 250C
Thermal Optical Coefficient:dno/dT=-0.874x10-6/K at 1.4m m
dne/dT=39.073x10-6/K at 1.4m m
The Sellmeier equations ( l in m m)no2 = 4.9048 + 0.11768/(l 2-0.04750) - 0.027169l 2
ne2 = 4.5820 + 0.099169/(l 2l 2
Specifications:
1. Standard Spec. of Birefringent wedges
Material
Laser grade LiNbO3
Standard Dimensions
1.25x1.25x0.5mm,1x1x0.45mm3,
Wedge Angle tolerance
±0.1°
Scattering Sites
invisible, probed with a He-Ne laser
Orientation
±0.5deg.
Dimensional Tolerance
±0.05mm
Surface quality
20/10 Scratch/Dig per MIL-O-13830B
Flatness
l/4 at 633 nm
Clear Aperture
> Central 90%
AR Coating
1310nm or 1550nm ±30nm
Standard Wedge
12°,13° or 15°
  2. Standard Spec. of laser application:
Transmitted wavefront distortion
better than l/4 @ 633nm
Dimension tolerance
(W±0.1mm) x (H±0.1mm) x (L±0.2mm)
Clear aperture
over 90% central diameter
Flatness
l/8 @ 633nm
Surface quality
20 /10 Scratch/Dig
Parallelism
better than 20 arc sec
Perpendicularity
5 arc min
Angle tolerance
Dq < 0.5o, Df < 0.5o
AR-coating
dual wave band AR coating at 1064/532 nm on both surfaces, with R < 0.2% at 1064 nm and R < 0.5% at 0.532 nm per surface
Standard Products
Part No.
Application
Dimension9(mm3)
Coating
LNB0101
SHG or OPO
5x5x20
AR Coating
LNB0102
SHG or OPO
8x8x20
AR Coating
LNB0103
SHG or OPO
9x9x25
AR Coating
LNB0104
SHG or OPO
10x10x25
AR Coating


Previous: KDP&K*DP
Next: KTP