| 摘要 |
PROBLEM TO BE SOLVED: To obtain a photo-refractive device capable of applying a uniform external electric field and ensuring enhanced performance by forming a pair of electrodes along a pair of opposite edge faces of a semiconductor crystal producing a photo-refractive effect when an external electric field is applied. SOLUTION: This photo-refractive device has a semiconductor crystal 1 producing a photo-refractive effect when an external electric field is applied and a pair of electrodes 3 formed along a pair of opposite edge faces of the crystal 1. The crystal 1 is an AlGaAs/GaAs multilayered film having a multiple quantum well structure and an insulating protective film 5 of SiO2 is formed on the top of the crystal 1. The electrodes 3 are formed by vapor-depositing gold on a pair of opposite edge faces 2 of the crystal 1 and the protective film 5. The crystal 1 and the electrodes 3 are formed on a glass substrate 6. The opposite electrode faces 4 of the electrodes 3 are parallel to each other and have mirror image relation with the crystal 1 in-between. |
