FIELD: physics.
SUBSTANCE: crystalline body, comprised of grenade type single crystal, has a couple of translucent surfaces that resist each other and reflect light, and, at least, one lateral surface that connects a couple of passing light surfaces. The ratio B/A of density A (amount of 1 cm2) of dislocations in translucent surfaces and density B (amount of 1 cm2) of dislocations in lateral surface meets the following general formula: 1≤(B/A)≤3600.
EFFECT: obtaining single crystals of garnets and optical instruments with such crystals with a satisfactory extinction coefficient.
11 cl, 17 dwg, 2 tbl, 6 ex
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