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        HOME >PRODUCT DISPLAY >PRODUCT DETAIL
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        KTA crystal
            Potassium Titanyle Arsenate(KTiOAsO4, or KTA) crystal is an excellent nonlinear optical crystal for?Optical Parametric Oscillation (OPO) Application. OPO devices based on KTAs are reliable, solid state, tunable laser radiation exhibiting energy conversion efficiencies above 50%. In addition, KTA has a very high damage threshold.
        • DETAIL
        • STANDARD PRODUCT
        • BASIC PROPERTIES

        • In comparison to KTP, KTA crystals feature large non-linear optical and electro-optical coefficients and have significantly reduced absorption in the 2.0 - 5.0 m range. Its low dielectric constants, low loss tangent and ionic conductivities are orders of magnitude less than that of KTP.

           

          Application:

              ● Optical Parametric Oscillation (OPO)

              ● Frequency Doubling (SHG @1083nm-3789nm) 

              ● Sum and Difference Frequency Generation (SFG)/(DFG) 

              ● Electro-Optical Q-switch and modulation for Optical waveguides

           

          CRYSTIK‘s KTA is featured by:

              ● High damage threshold 

              ● Broad temperature and spectral bandwidth 

              ● Highly resistant to high intensity laser radiation.

              ● Wide angular bandwidth and small walk-off angle 

              ● Large nonlinear optical and electro-optical coefficients

              ● Lower absorption in the 3-4 μm spectrum range than KTP.

              ● Low dielectric constants, loss tangent and ionic conductivities (much less than that of KTP) 

           

          CRYSTIK offers:

              ● AR-coating from visible to 3300nm;
              ● Re-polishing, re-coating service;

              ● Crystal length from 0.1mm to 30mm and size up to 10x10x30mm3 or 5×5×30mm3
              ● Fast delivery (10 working days for polished only, 15 working days for AR-coated).


        • Dimension Tolerance

          W(+/-0.1)*H(+/-0.1)*L(+0.5/-0.1)mm

          Angle Tolerance

          +/-0.25°

          Perpendicularity

          ≤10′

          Scratch/Dig

          20/10

          Chamfer

          ≤0.2mmx45°

          Parallelism

          ≤20″

          Chips

          ≤0.1mm

          Flatness

          [email protected]

          Clear Aperture

          ≥90%

          Wavefront distortion

          [email protected]


          Coatings

          [email protected](R<0.2%)&1533(R<0.5%)&3475(R<10%)

          C2---

          Damage Threshold

          500MW/cm2 (1064nm, 10ns, 10Hz)


        • 圖片1.png

          Crystal Structure

          Orthorhombic,pna21,mm2

          Lattice Parameters

          a=1.312nm,b=0.656nm, c=1.0798nm,

          Density

          3.45 g/cm3

          Melting Point

          1130±5°C

          Ferroeletrictransition temperature (°C)

          880

          Ionic conductivity (room temperature,10kHz), s/cm

          0.7-3.4 x 10^6

          Absorption coefficient

          <0.1%/cm @ 1064nm
           <0.1%/ cm @ 1533nm 
           <5%/cm @ 3475nm

          Hygroscopic susceptibility

          No

          Dielectric constant:

          Σ33=42

          Thermal conductivity (mw/cm°C)

          k1=18,k2=19,k3=21

           

          Optical Properties:


          Transmitting range:

          0.35-5.3um

          Refractive indices(@ 1064nm): 

          nx=1.782

          ny=1.790,

          nz=1.868,

          Sellmeier equations:

          Ni^2=Ai+Biλ^2/(λ^2-Ci^2)-Diλ^2

          index

          A

          B

          C

          D

          Nx

          1.90713

          1.23522

          0.19692

          0.01025

          Ny

          2.15912

          1.00099

          0.21844

          0.01096

          Nz

          2.14768

          1.29559

          0.22719

          0.01436

           

          Phase matching range(nm):

          1075-1134nm

          NCPM Angle

          q=90      j=0

          Wavelength

          Pump: 1064 nm Signal: 1533 nm  Idler: 3475 nm  

          Nonlinear Coefficients: (pm/v)

          d15 =2.3

          d24 =3.2

          d31 =2.8

          d32 =4.2

          d33 =16.2

          Electro-optic coefficients(low frequency, pm/v):

          r13=11.5

          r23=15.4

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