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LiNbO3 Crystals

  • Wide Wavelength range up to 3μm 
  • Applications: OPO, QPM, Pockels Cells, Q-switch and phase modulator, waveguides.
  • Crystals Ingot, blanks and polished substrates available
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Specification

Material Standard High Precision
Size ~20×20 mm2
Thickness 0.01~25 mm
Dimension Tolerance +/-0.1mm +/-0.01mm
Wavefront Distortion λ/4 λ/6
Surface Quality 20/10 S/D 10/5 S/D
Orientation +/-0.3° +/-0.1°
Parallelism <20 arc sec <10 arc sec
Flatness λ/4 λ/6
Coating AR Coating or P Coating

 

Basic Properties:

Transparency Range 420~5200nm Optical Homogeneity ~ 5 x 10-5 /cm
Refractive indices@1064nm ne=2.146, no=2.220@1300nm
ne=2.156, no=2.232@1064nm
ne=2.203, no=2.286@632.8nm
NLO Coefficients d33 = 86 x d36 (KDP)
d31 =11.6 x d36 (KDP)
d22 = 5.6 x d36 (KDP)
Effective NLO Coefficients γT33 = 32 pm/V, γS33 = 31 pm/V
γT31 =10 pm/V, γS31=8.6 pm/V
γT22 = 6.8 pm/V, γS22= 3.4 pm/V
Half-Wave Voltage, DC
Electrical field // z, light ⊥z:
Electrical field // x or y, light // z:
3.03 KV
4.02 KV
Damage Threshold 100 MW/cm2 (10ns, 1064nm)

 

Lithium niobate (LiNbO3) crystals has a wide transmission spectrum of 350nm to 5200nm, LiNbO3 crystal is a kind of ferroelectric materials which has a trigonal crystals system, LiNbO3 crystals has excellent piezoelectric, electro-optic, nonlinear optical properties, it has negative uniaxial birefringence properties. These properties makes LiNbO3 became an crystal with versatile applications.

Surface Acoustic Wave (SAW) devices. For its excellent piezoelectric effect, LiNbO3 are used to make the Surface Acoustic Wave (SAW) devices, which are widely used in the telecommunication and mobile phones. Shalom EO offers the stocked and custom SAW grade LiNbO3 wafers.

Electro-optic Modulator and Q-switches. Due to its large electro-optic coefficient, optical grade LiNbO3 crystals are suitable to make the electro-optic modulators and pockels cells, especially at the infrared wavelength range. Comparing to other Q switch materials, LiNbO3 pockels cells has a lower half-wave voltage and  zero residual birefringence. MgO doping (often 5%) LiNbO3 crystals are often used to improve the damaging threshold. Shalom EO offers the LiNbO3 crystals and MgO:LiNbO3 crystals for EO modulators and Q-switches, LiNbO3 pockels cells are also offered.  

Periodically-poled lithium niobate (PPLN) Waveguide is chieved by electrical poling with periodically structured electrode, the ferroelectric domains alternatively to the +c and the −c direction with a period of typically between 5 and 35 µm. The shorter periods of this range are used for second harmonic generation, while the longer ones for optical parametric oscillation. Hangzhou Shalom EO offers the stocked and custom MgO:PPLN crystals, they have been used in Second Harmonic Generation (SHG), Optical Parametric Oscillator (OPO), Sum Frequency Generation and Difference Frequency Generation (DFG) applications. 

Application Notes:

  • Frequency doubles
  • Optical parametric oscillators (OPO)
  • Quasi-phase-matched (QPM) device
  • Q-switches and modulator
  • LiNbO3 and MgO:LiNbO3 Pockels Cells

    LiNbO3 and MgO:LiNbO3 Pockels Cells

    • Low Half Wave Voltage
    • High Electro-Optical Coefficients
    • Work in Transverse Mode
    • Long Wavelength up to 4μm
    • Preferable for Er:YAG, Ho:YAG and Tm:YAG lasers
    ...

    SAW grade LiNbO3 Wafers D100x0.35mm Y+128° SSP

    SAW grade LiNbO3 Wafers D100x0.35mm Y+128° SSP

    Code: 611-014


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    LiNbO3 Z-Cut, 10x10x20mm, Rectangular, Au electroded for EO applications

    LiNbO3 Z-Cut, 10x10x20mm, Rectangular, Au electroded for EO applications

    Code: 2043-003

    ...