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        • Product name: RTP
        • Product ID: 106
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        RTP Crystal

        RTP (Rubidium Titanyle Phosphate – RbTiOPO4) is an isomorph of KTP crystal which is used in nonlinear and Electro Optical applications. It has advantages of higher damage threshold(about 1.8 times of KTP), high resistivity, high repetition rate, no hygroscopic and no induce piezo-electric effect with electrical signals up to 60 kHz. Its transmission range is 350nm to 4500nm.

                                                                                  Basic Properties


        Crystal structure


        Cell Parameters

        a = 12.96 Å; b =10.56 Å; c =6.49 Å

        Mohs hardness

        About 5

        Density, g/cm3


        Melting Point:

        About 1000?C

        Thermal Expansion Coefficients (/K)


        αx=1.01x10-5, αy =1.37x10-5,

        αz =-4..17x10-6

        Sellmeier equations(λ in um)

        nx2=2.15559 + 0.93307[1-(0.20994/λ)2] - 0.01452λ2
        ny2=2.38494 + 0.73603[1-(0.23891/λ)2] - 0.01583 λ2
        nz2=2.27723 + 1.11030[1-(0.23454/λ)2] - 0.01995λ2

        Thermo-optical coefficients (dλ/dT)

        -0.029 nm / °C

        Electro-optic constants(Y-cut)


        r33=38.5 pm/V

        r33=35 pm/V,r23=12.5 pm/V, r13=10.6 pm/V

        Electrical Resistivity

        About 1011-1012ohm·cm

        Static Half Wave Voltage at 1064 nm


        4x4x20 mm: 1,600 V
        6x6x20 mm: 2,400 V
         9x9x20 mm: 3,600 V

        Extinction Ratio





        Growing Orientation

        Along Y-axis

        Maximum length(5x5mm)


        Length tolerance, mm

        +0.5 / -0.1

        Width and heighth tolerance, mm



        < 30


        < 15

        Surface quality