Abstract

We will present recent results in the development of two-photon 3-D memory systems. While much of our research is in materials, we are also investigating the areas of system design and engineering. The major areas emphasized are (1) memory addressing, (2) dynamic focusing throughout the material, and (3) channel cross talk minimization as they pertain to storage and retrieval of parallel channels of data in two-photon materials. Memory addressing methods utilizing (1) orthogonal beams and (2) pulse collision will be explained. We will discuss the trade-offs between these addressing schemes and the other design considerations in terms of the maximum volumetric density (MVD), parallelism, and access times. Specific components will be combined to create a broad range of possible memory systems. The highest storage density system has an MVD = 1 Tb/cm³ and is achievable in a system with a bandwidth of 100 Kbit/s. Another proposed system has the band width of 10 Tbit/s and is limited to an MVD = 0.5 Gbit/cm³.

© 1992 Optical Society of America