Laser Printing With The Linear TIR Spatial Light Modulator

Robert A. Sprague; William D. Turner; David L. Hecht; Richard V. Johnson

doi:10.1117/12.935249

26 October 1983 Laser Printing With The Linear TIR Spatial Light Modulator

Robert A. Sprague, William D. Turner, David L. Hecht, Richard V. Johnson

Proceedings Volume 0396, Advances in Laser Scanning and Recording; (1983) https://doi.org/10.1117/12.935249
Event: 1983 International Technical Conference/Europe, 1983, Geneva, Switzerland

Abstract

A linear spatial light modulator has been developed for laser printing. It provides capability for parallel modulation of several thousand points across a line of illumination, which is then imaged onto a photosensitive medium. The spatial light modulator, which has been described previously, utilizes a VLSI silicon chip containing addressing electronics, drive transistors, and a series of metal lines. This chip is pressed against a single crystal piece of lithium niobate, so that flinging fields created by voltage differences between metal lines are proximity coupled into the crystal and generate locally controllable changes in the index of refraction. The device is read out in total internal reflection off the proximity coupling interface, with schlieren readout imaging optics used to convert the phase modulation of the wavefront to a modulated line image. This paper will review the basic device concept, describe some of the device design and operating parameters, discuss printer application considerations, and show results from a breadboard level printer.

Citation Download Citation

Robert A. Sprague, William D. Turner, David L. Hecht, and Richard V. Johnson "Laser Printing With The Linear TIR Spatial Light Modulator", Proc. SPIE 0396, Advances in Laser Scanning and Recording, (26 October 1983); https://doi.org/10.1117/12.935249

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