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Home Physics Achromatic Anti-Reflective Coatings

Achromatic Anti-Reflective Coatings

Description

Specification:

  • anti-reflection band in units of qo/q --------------------------------------------------- 0.77-1.40
    (where q - wave length, qo – preselected wave length);
  • anti-reflection band if qo=590 nm ----------------------------------------------------- 420-760;
  • spectral position wavelength of the anti-reflection band center qc, nm -- 220-12000;
  • reflection coefficient, not more than -------------------------------------------------- 0.5%;
  • threshold of optical damage, W/cm2 ------------------------------------------------- < 3000;
  • diameter of substrates, mm ----------------------------------------------------------- < 400

Innovative Aspect and Main Advantages

Achromatic anti-reflective coating could be used in optical and quantum electronics with preset spectral characteristics. Due to the new technology of their preparation the cost of these devices is lower and the quality is comparable with the best world analogous.

Areas of Application

Achromatic anti-reflective coating intended for increasing the efficiency and economy of optical and laser devices operation by decreasing the losses value of light reflection from surfaces of the optical elements with different value of refractive indices, including the standard dispersion law in the range: 2.77-2.55 (silicon carbide), 2.44-2.2 (paratellurite, lithium niobide, barium-sodium niobide etc.), 1.8-1.45 (glasses, fused silica).

They are also used for reducing the glare and ghost images from secondary reflections which will result in a clearer and sharper image on any optical substrate, that are necessary for camera lenses, instrument panels, binoculars, cover glasses and telescopes.


Fig. 1 Achromatic anti-reflective coatings

Stage of Development

Prototype - laboratory tested.

Contact Details

Oleksandr VLASENKO
Organization: V. Lashkaryov Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine
Address: 41 Nauki Prospect, 03028 Kyiv, Ukraine
+(380-44) 525-1260, Fax: +(380-44) 525-8342
This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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