FIELD: physics.
SUBSTANCE: rendering is carried out by irradiating a sample with two-micron laser radiation, the sample having a spectral absorption band close to the spectral band of the laser radiation. The sample used is powder of a ground monocrystal of CaF2:Ho. The powder is deposited using a binding material on a flat surface which reflects two-micron radiation.
EFFECT: simple method and providing high contrast and resolution in a wide range of radiation power density.
1 dwg
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