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  1. #1
    Mustafa Umut Sarac's Avatar
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    DIY Optical Lens Building Material,Mineral Monocrystal Potassium Dihydrogen Phosphate

    Whatever you do,stop!!! and download the LLNL paper attached.

    If you want to build large lenses and if optical glass is not available to your lens size, very expensive or at foreign company,you can make your exotic Lawrence Livermore Laboratories Laser Fusion experiments grade KDP mono crystal, 320 kilograms of mass in few months,only preparing an saturated liquid,an turntable and heating the mass 40 to 70 celcius degrees.

    I prepared a basic intro, google KDP and growing.Growth rate 15 to 25 mm a day. If you can make it fill a mold,you would not be needed to cnc later

    There are hundreds of papers at google and you can learn as much as you want.You can order a cut giant cylinderical lens, cone lens, aspheric lens elements with cnc or diamond turning.

    A single crystal or monocrystalline solid is a material in which the crystal lattice of the entire sample is continuous and unbroken to the edges of the sample, with no grain boundaries. The absence of the defects associated with grain boundaries can give monocrystals unique properties, particularly mechanical, optical and electrical, which can also be anisotropic, depending on the type of crystallographic structure. These properties, in addition to making them precious in some gems, are industrially used in technological applications, especially in optics and electronics.

    Mustafa Umut Sarac
    Istanbul
    Attached Thumbnails Attached Thumbnails KDP_crystal.jpg   Mono_Crystal_Corundum_Leiko_Sapphire_.jpg  
    Attached Files
    Last edited by Mustafa Umut Sarac; 01-12-2014 at 04:37 PM. Click to view previous post history.

  2. #2
    Mustafa Umut Sarac's Avatar
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    www.alibaba.com
    http://www.alibaba.com/showroom/pric...phosphate.html
    Great price of potassium dihydrogen phosphate
    US $1480-1680 / Metric Ton ( FOB Price)
    1 Metric Ton (Min. Order)
    3000 Metric Ton/Metric Tons per Month (Supply Ability)
    Tags: Price Of Potassium Dihydrogen Phosphate | Potassium Dihydrogen Phosphate | Potassium Phosphate
    Xiamen Vastland Chemical Co., Ltd.
    China (Mainland)

  3. #3
    Mustafa Umut Sarac's Avatar
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    attached paper gives most important details of growing KDP monocrystal.

  4. #4
    Mustafa Umut Sarac's Avatar
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    Lawrence Livermore National Laboratory Video demonstrates the process.

    https://lasers.llnl.gov/multimedia/v...tal_growth.php

  5. #5
    Mustafa Umut Sarac's Avatar
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    sigma price of powder 175 dollars per kilogram , 100 times more expensive than china.

  6. #6

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    http://www.pmoptics.com/potassium_di...phosphate.html

    It is hygroscopic, very fragile, lacks mechanical strength, and is sensitive to thermal shock; consequently, it must be handled with care and kept dry.
    Mustafa, you really should learn more about the materials and methods that excite you before you pester us about them.

  7. #7
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    Potassium Dihydrogen Phosphate (KH2PO4) is a crystal noted for its non-linear optical properties. It has been used as electro-optical polarization rotators to vary the intensity and frequency doubling of Nd:YAG laser. It is hygroscopic, very fragile, lacks mechanical strength, and is sensitive to thermal shock; consequently, it must be handled with care and kept dry.

    Dont you handle your camera glass with care and kept it dry ?

  8. #8

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    Mustafa, I leave my lenses out in the rain. How do you keep yours?



 

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