FIELD: optics.
SUBSTANCE: invention relates to the field of optical material science and relates to a material for imaging the laser radiation of the near infrared spectral range (1,800÷2,150 nm) into the visible spectral range (635÷670 nm). Such material is thin transparent polymer-inorganic composite films, containing components at the following ratio, mass %: ap-conversion particles Ca1-xHoxF2+x at x=0.06÷0.08 (30.5÷61.3 – in terms of Ho 4÷8), nanocrystals of cellulose – 5.0÷8.0 and methylcellulose – the rest.
EFFECT: technical result consists in providing the possibility of visualizing two-micron laser radiation in the visible range with a high luminescence intensity and a high threshold of laser durability.
5 cl, 8 dwg
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