| 摘要 |
In the present invention, there is disclosed a pair of active optical elements (D1 a D2), where both the elements (D1 a D2) exhibit a concentration gradient (4) of optically active centers above acceptable extent of optical homogeneity, are mirror-like and/or rotary symmetrical in shape and at the same time through distribution of the concentration gradient (4) of the optically active centers at least in a plane and/or volume intended for the reflection and/or passage of an optical beam (5). The preparation of the above-indicated pair of active optical elements is characterized in that, there is used a starting material, which comprises at least one area of the mirror-like and/or rotary symmetrical concentration gradient (4) of the optically active centers along at least one axis (2). At the same time, along that axis, the change in the concentration gradient (4) of the optically active centers takes place. The preparation process of the above-indicated pair of active optical elements is further characterized in that the starting material is cut short in the direction of the axis (2) of symmetry and provided with inspection faces. Within the volume of such modified material, there are selected two mirror-like and/or rotary symmetrical sections, which exhibit the optical homogeneity. Further, making at least three cuts (3) being parallel to each other and taken in the direction parallel to the axis (2) of symmetry, there are performed at least two geometric configurations, whereby the central cut represents a geometrical locus of the mirror-like and/or rotary symmetry. A composite optical material is formed by at least one pair of active optical elements, whereby the individual elements (D1 a D2) of the pair are angularly displaced by 180 degrees to each other along a common axis being perpendicular to the gradient (4) direction. |
