Language: 

        Your present location:Home >> Crystal >> NLO crystal >> DKDP & KDP
        Product Search
        • keyword :
        • Category :
        •  
        Top Products
        Contact Us

        THATSHIGH Photoelectric Technology Co., Ltd.

        Add: Office Building No.1, 677 Tian-chen Road., National
           High-tech Development Zone, Jinan, China
        PC : 250100
        Tel: +86-531-88687737
          +86-531-88687116
        Fax:+86-531-88907971
        E-mail:sales@thatshigh.com
        Website:www.thatshigh.com

        • Product Name: DKDP & KDP
        • NO.: 2301

        Inquiry

        KDP & DKDP 

        Characterized by good UV transmission, high damage threshold, and high birefringence, Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (DKDP ) are among the most widely-used commercial NLO materials, though their NLO coefficients are relatively low. They are usually used for the doubling, tripling and quadrupling of Nd:YAG laser at room temperature. They are also excellent E-O crystals with high E-O coefficients, widely used as electro-optical modulators, such as Q-switches, Pockels Cells, etc.
         KDP and DKDP crystals are developed by water-solution method and can grow up to very big size. Therefore, they are good options for low-cost and large-size finished non-linear components, e.g. for frequency-doubling (SHG), frequency-tripling (THG) and frequency- quadrupling (FHG) of Nd:YAG laser at 1064nm.

        Basic Properties of KDP & DKDP Crystal

         

        KDP

        DKDP

        Chemical Formula

        KH2PO4

        KD2PO4

        Transparency Range

        200nm-1500nm

        200nm-1600nm

        Nonlinear Coefficients

        d36=0.44pm/V

        d36=0.40pm/V

        Refractive index (@1064nm)

        no=1.4938, ne=1.4599

        no=1.4948, ne=1.4554

        Electro-optical Coefficients 

        γ41=8.8pm/V
        γ63=10.3pm/V

        γ41=8.8pm/V
        γ63=25pm/V

        Longitudinal Half-wave Voltage

        Vπ=7.65kV(λ=546nm)

        Vπ=2.98kV(λ=546nm)

        Absorptance

        0.07/cm

        0.006/cm

        Sellmeier equations of KDP: (λ in μm)
        no2=2.259276+0.01008956/(λ2-0.012942625)+13.00522λ2/(λ2-400) ne2=2.132668+0.008637494/(λ2-0.012281043)+3.2279924λ2/(λ2-400)

        Sellmeier equations of DKDP: (λ in μm)
        no2=1.9575544+0.2901391λ2/(λ2-0.0281399)-0.02824391λ2+0.004977826λ2
        ne2=1.5005779+0.6276034λ2/(λ2-0.0131558)-0.01054063λ2+0.002243821λ2

        THATSHIGH Specifications for DKDP Crystal


         Dimension Tolerance

        (W±0.1mm) × (H±0.1mm) × (L+0.2mm/-0.1mm) or (Dia. ± 0.1mm) ×(L+0.2/-0.1mm)

        Wavefront Distortion

        < λ/8 @ 633nm

        Clear Aperture

        > 90% of central area

        Chamfer

        ≤0.3mm @45°

        Flatness

        λ/8 @ 633 nm (L≥ 2.5mm); λ/4 @ 633nm (L< 2.5mm)

        Chip

        ≤ 0.1mm

        Surface Quality [S/D]

        20/10

        Parallelism

        < 10"

        Perpendicularity

        ≤ 10'

        Angle Tolerance

        ≤ 0.2°

        Damage Threshold

        1GW/cm2 for 1064nm, 10ns, 10Hz (uncoated)

        Interior Quality

        No visible scattering paths or centers [inspected by 50mW green laser]

        Key words :

        Message
        Goods No. Goods name Pre-ordered quantity Expected unit price Operation
        2301 DKDP & KDP Delete

        Enter inquiry description

        Inquiry description:
        * Within 500 characters
        Inquirer's name:
        *
        Inquirer's gender:
          Male Female
        Inquirer's email address:
        *
            Whether you receive email reminder
        Inquirer's telephone number:
         
        Inquirer's cellphone number:
         
            Whether you receive SMS reminder
        Inquirer's fax number:
         
        Inquirer's address:
         
        Inquirer's post code:
         
        Verification code:
         
            Continue inquiry