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        HOME >PRODUCT DISPLAY >PRODUCT DETAIL
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        LiNbO3 & MgO:LiNbO3 Pockels Cell
            LiNbO3 & MgO:LiNbO3 Crystals LiNbO3 crystal is a low cost photoelectric material with good mechanical and physical properties as well as high optical homogeneity. It has been widely used as frequency doublers for wavelength > 1mm and optical parametric oscillators (OPOs) pumped at 1064nm as well as quasi-phase-matched (QPM) devices.
        • DETAIL
        • STANDARD PRODUCT
        • BASIC PROPERTIES
        • Applications: 


              With preferable E-O coefficients, LiNbO3 crystal has become the most commonly used material for Q-switches and phase modulators, waveguide substrate, and surface acoustic wave (SAW) wafers, etc. Compared with LiNbO3, MgO:LiNbO3 crystal exhibits higher damage threshold.



        • Typical Sizes

          9×9×25 mm3  10×10×20 mm3

          6×6×20 mm3  4×4×15 mm3


          Other size is available upon request 

          Dimension Tolerance

          Z-axis: ± 0.2 mm 

          X-axis and Y-axis: ±0.1 mm 

          Chamfer

          < 0.2 mm @ 45°  

          Accuracy of Orientation

          Z-axis: < ± 5′ 
          X-axis and Y-axis: < ± 10′ 

          Parallelism

          < 10" 

          Surface Quality [S/D]

          10/5 

          Flatness

          λ/10 @ 633 nm 

          AR-coating

          R < 0.15% @ 1064 nm 

          Electrodes

          Gold/Chrome plated on X-faces 

          Wavefront Distortion

          < λ/6 @ 633 nm 

          Extinction Ratio

          > 100:1 @ 633 nm (?6 mm beam) 

          Damage Threshold

          100 MW/cm2 (10 ns, 1064 nm)


        • Structural and Physical Properties


          Crystal Structure

          Trigonal, Space group R3c, Point group 3m

          Cell Parameters

          a=5.148 ? , c=13.863 ?

          Melting Point

          1253℃

          Curie Temperature

          1140℃

          Mohs Hardness

          5

          Density

          4.64g/cm3

          Elastic Stiffness Coefficients

          CE11 =2.33(×1011N/m2  )

          CE33 =2.77(×1011N/m2  )


           Optical and Electro-optical Properties


          Transparency Range

          420-5200nm

          Optical Homogeneity

          ~ 5 x 10-5/cm

          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

          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 (10 ns, 1064nm)


          Thermal and Electrical Properties 


          Melting Point

          1250℃

          Curie Temperature

          1140℃

          Thermal Conductivity

          38W/m/K @25℃

          Thermal Expansion Coefficients (at 25℃)

          //a, 2.0×10-6/K
          //c, 2.2×10-6/K

          Resistivity

          2×10-6 Ω·cm @200℃

          Dielectric Constants

          εS11/ε0  =43               εT11/ε0=78   
          εS33/ε0  =28               εT33/ε0= 32

          Piezoelectric Strain Constant

          D22=2.04(×10-11 C/N )
          D33=19.22 (×10-11 C/N  )

           no2=4.9048+0.11768/(λ2-0.04750)-0.027169λ2  The Sellmeier equations (λ in μm):

           ne2=4.5820+0.099169/(λ2-0.04443)-0.02195λ2

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