GARNET MONOCRYSTAL, OPTICAL INSULATOR AND OPTICAL PROCESSOR Russian patent published in 2014 - IPC C30B29/28 G02F1/09 G02B1/02 H01S3/16 

FIELD: physics, optics.

SUBSTANCE: group of inventions relates to producing a terbium aluminium garnet monocrystal which can be used as a Faraday rotator for optical insulators. In the terbium aluminium garnet monocrystal, a portion of aluminium is at least replaced with scandium and a portion of at least aluminium or terbium is replaced with at least one component selected from a group consisting of thulium, ytterbium and yttrium, wherein the garnet monocrystal has the general formula (Tb_3-x-zSc_zM_x) (Sc_2-yM_y) Al₃O₁₂ (1), where M represents at least one component selected from a group consisting of Tm, Yb and Y, and x, y and z satisfy the following relationship: 0<x+y≤0.30 and 0≤z≤0.30.

EFFECT: present monocrystal has a high light transmission factor in a wide wavelength range and a wide Faraday rotation angle with cracking-resistance.

8 cl, 3 dwg, 1 tbl, 12 ex