| 摘要 |
Optical devices are manufactured by aligning domains, or poled volumes, in specific patterns in a ferroelectric crystal material. The ferroelectric crystal material may be poled in a repeated pattern, using an electrode having a shaped contact area that is essentially the same as a single spatial feature of the pattern such as a line or a triangle, or with a shaped contact area that is smaller than a spatial feature of the pattern, or smaller than all of the spatial features of the pattern. These devices may be produced use a repositionable electrode on one surface of the crystal, rather than a conventional, fixed electrode. The repositionable electrode is positioned on a surface of the crystal, with an opposing electrode on the opposing surface of the ferroelectric crystal material, the ferroelectric crystal material is poled by applying a voltage profile between the electrodes, the repositionable electrode is repositioned to a new location, and the ferroelectric crystal material is poled in the new location. The procedure is repeated for as many instances of the poled feature as desired.
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