Fifteen Years Of Laser Recording-Where We've Been And Where We're Going

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Abstract
One of the earliest practical applications of lasers was in the field of recording. The laser provides a source of radiation that is convenient to modu-late and sufficiently intense to affect permanent changes in materials (recording). Both signal and image recording systems have been built using silver halide film as the storage media. Now under development are optical disc techniques that ablate special coatings on the disc surface. The laser work has been funded in general because the requirements at hand could not be met by more conventional technology. The engineering of these systems has resulted in working with the ultimate in mechanical precision, the highest optical quality available, and at electrical bandwidths that push the state of the art. This paper describes the early work in laser signal recording, the significant accomplishments in image recording, and the current efforts in optical disc recording.

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