Resonant Diffraction in Semi-Insulating Multiple Quantum

这项建议的目的是 联合收割机 全息图像处理 光折变半导体， 共振增强的电- 利用量子力学的光学特性， 受限激子 这一目标 将导致第一个系统性的 半绝缘多路复用器研究 量子威尔斯及其应用 to image图像processing处理. 显著 共振增强 光折变衍射是 可能 半导体已经 具有快速装置的优点 速度 量子威尔斯必须 半侮辱性地允许空间 电场的调制。 在 建议的研究，多 量子阱结构将是 通过分子束外延生长， 将被离子注入半绝缘 置入 差动 波长的传输， 接近基本吸收 量子威尔斯将被测量 由于交变电场 施加在量子威尔斯上。 全息光栅将被施加 在威尔斯井上使用干扰 两个相干的低功率连续激光器 可以转动的梁 不断地通过基本的 吸收 这项研究 重要性，因为它将产生 图像处理设备， 分辨率仅限于 衍射，光学寻址 并且被控制， 操作能量小。

The objective of this proposal is to combine the advantages of holographic image processing in photorefractive semiconductors, with the resonant enhancement of electro- optic properties using quantum- confined excitons. This objective will result in the first systematic study of semi-insulating multiple quantum wells and their application to image processing. Significant resonant enhancement of photorefractive diffraction is possible. Semiconductor already have the advantage of fast device speed. The quantum wells must be semi-insulting to allow spatial modulation of electric fields. In the proposed research, multiple quantum well structures will be grown by molecular beam epitaxy and will be made semi-insulating by ion implantation. The differential transmission of wavelengths that are near the fundamental absorption of the quantum wells will be measured as an alternating electric field is applied across the quantum wells. Holographic gratings will be imposed on the wells using the interference of two coherent, low-power, cw laser beams that can be turned continuously through the fundamental absorption. The research has significance because it will yield image processing devices that are limited in resolution only by diffraction, are optically addressed and controlled, and require very small operation energies.