Share Email Print

Proceedings Paper

Potential application of optical phased arrays in two-photon three-dimensional optical memories
Author(s): Albert F. Lawrence; Robert R. Birge
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The potential use of optical phased arrays to address individual bits within a volumetric memory medium is examined by using phase sensitive ray tracing procedures. We demonstrate that a 200 element linear array with cylindrical microlens collimation is capable of addressing two-photon (λ≈1tm) activated irradiated volumes of approximately 64 μm3, comparable to the volumetric elements that can be addressed via standard crossed-beam two-photon excitation. The two key advantages of using phased arrays is speed of addressing and the elimination of cleaning pulses. Both advantages dramatically improve read/write speeds as well as signal-to-noise performance of two-photon volumetric memories. We examine four different configurations including collimated linear and spherical arrays as well as binary and pure phased two- dimensional arrays. Although phased arrays with the necessary characteristics have not as yet been constructed, we hope that the present demonstration of their potential advantages will enhance interest in the development of phased arrays for application in volumetric memories.

Paper Details

Date Published: 2 February 1993
Proc. SPIE 1773, Photonics for Computers, Neural Networks, and Memories, (2 February 1993); doi: 10.1117/12.983229
Show Author Affiliations
Albert F. Lawrence, Syracuse Univ. (United States)
Robert R. Birge, Syracuse Univ. (United States)

Published in SPIE Proceedings Vol. 1773:
Photonics for Computers, Neural Networks, and Memories
Stephen T. Kowel; John A. Neff; William J. Miceli, Editor(s)

© SPIE. Terms of Use
Back to Top