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              • LiNbO3 and MgO:LiNbO3
               
              LiNbO3 and MgO:LiNbO3

               

              鈮酸鋰(LiNbO3)晶體被廣泛用作1000nm以上波長的倍頻和1064nm泵浦光的光參量放大,也可做準(zhǔn)相位匹配. 同時(shí),鈮酸鋰晶體也被廣泛應(yīng)用于光電調(diào)節(jié)器及波導(dǎo)材料,和用作Nd:YAG,Nd:YLF和摻Ti的藍(lán)寶石激光Q開關(guān). 美揚(yáng)光電公司可為上述用途提供各種規(guī)格的高質(zhì)量,大尺寸的鈮酸鋰晶體. 

              Main Features:
               

              • Large Electro-Optic (E-O) coefficients
              • Large Acousto-Optic (A-O) coefficients

              Typical Applications:

              • Frequency doublers
              • Optical parametric oscillators (OPO)
              • Quasi-phase-matched (QPM) device
              • Q-switches and modulator

              Specifications:

              Dimensional Tolerance
              ±0.1mm
              Angle Tolerance
              ±0.5deg
              Wavefront Distortion
              <λ/4 @ 633nm
              Surface Flatness
              <λ/8 @ 633 nm
              Surface Quality
              20/10 Scratch and Dig
              Parallelism
              < 20 arc seconds
              Perpendicularity
              < 5 arc minuntes
              Clear Aperture
              > Central 90%
              AR-Coating
              dual waveband AR coating @1064/532 nm on both surfaces, with R < 0.2% @ 1064 nm and R < 0.5% @ 0.532 nm per surface

               Physical and Optical Properties
               

              Crystal Structure
              Trigonal, space group R3c
              Cell Parameters
              a = 0.515?, c = 13.863?, Z = 6?
              Melting Point
              1255±5oC
              Curie Point
              1140±5oC
              Mohs Hardness
              5
              Density
              4.64 g/cm3
              Absorption Coefficient
              ~ 0.1%/cm @ 1064 nm
              Solubility:
              insoluble in H2O
              Relative Dielectric Constant
              eT11/e0: 85
              eT33/e0: 29.5
              Thermal Expansion Coefficients( @ 25oC)
              ||a, 2.0 x 10-6/K
              ||c, 2.2 x 10-6/K
              Thermal Conductivity
              38 W /m /K @ 25oC
              Transparency Range
              420 - 5200 nm
              Optical Homogeneity
              ~ 5 x 10-5 /cm
              Sellmeier Equations( l in mm)
              no2(l) = 4.9048+0.11768/(l2 - 0.04750) - 0.027169 l2
              ne2(l) = 4.5820+0.099169/(l2- 0.04443) - 0.021950 l2
              NLO Coefficients
              d33 = 34.4 pm/V
              d31 = d15 = 5.95 pm/V
              d22 = 3.07 pm/V
              Electro-Optic Coefficients
              gT33 = 32 pm/V, gS33 = 31 pm/V
              gT31 = 10 pm/V, gS31 = 8.6 pm/V
              gT22 = 6.8 pm/V, gS22 = 3.4 pm/V
              Half-Wave Voltage, DC
              Electrical field ||z, light ^ z 3.03 KV
              Electrical field ||x or y, light || z 4.02 KV
              Efficiency NLO Coefficients
              deff=5.7pm/V or~14.6xd36(KDP) for frequency doubling 1300 nm;
              deff=5.3pm/V or~13.6xd36(KDP) for OPO pumped at 1300nm;
              deff=17.6pm/V or~45xd36(KDP) for quasi-phase-matched structure;
              Damage Threshold
              200 MW/cm2

              Standard Products Series

              MT- Optics,Inc. can provide LiNbO3 products used for many applications, such as E-O modulator, waveguide substrate, frequency doubling, SAW wafer application and etc.
               

              1. E-O modulator

              Part No.
              Dimension
              Cut
              Coating
              Electrode
              LNO001
              3x3x15mm
              Z-cut
              AR/AR@1064nm
              Au on X face
              LNO002
              4x4x15mm
              Z-cut
              AR/AR@1064nm
              Au on X face
              LNO003
              6x6x25mm
              Z-cut
              AR/AR@1064nm
              Au on X face
              LNO004
              9x9x25mm
              Z-cut
              AR/AR@1064nm
              Au on X face

              2. Waveguide substrate
               

              Part No.
              Dimension
              End faces
              LNO101
              50x50x1mm
              One surface polished, reverse fine ground

              3. SAW Wafer

              Part No.
              Dimension
              Thickness
              End faces
              LNO201
              76.2mm
              0.5mm
              One surface polished, reverse fine ground

              Note: 127.86deg Y cut, Y-cut, Z-cut and other cut also can be provided upon request.
               

              Magnesium Oxide Doped Lithium Niobate Crystal

              Compared with LiNbO3 crystal, MgO:LiNbO3 crystal exhibits its particular advantages for NCPM
              frequency doubling (SHG) of Nd:Lasers, mixing (SFG) and optical parametric oscillators
              (OPOs). MgO:LiNbO3 is also a good crystal for optical parametric oscillators (OPOs) and
              amplifiers (OPAs), quasi-phase-matched doublers and integrated waveguide.

              MgO:LiNbO3 has similar effective nonlinear coefficients to pure LiNbO3 . Its Sellmeier equations
              (for MgO dopant 7 mol%) are:

              no2=4.8762+0.11554/(λ2 - 0.04674) - 0.033119λ2

              ne2=4.5469+0.094779/(λ2 - 0.04439) - 0.026721λ2


              Lithium Tantalate Crystal

              LiTaO3 crystal is also widely used as electro-optic modulator, with NLO and E-O properties
              similar to those of LiNbO3 but higher damage threshold (>500 MW/cm for ns pulsed).
               

               

              Note: 127.86deg Y cut, Y-cut, Z-cut and other cut also can be provided upon request.


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