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Intracavity plasma shutter for TE CO2 lasers

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Abstract

Due to their high-output energies and high-peak powers, TE CO2 lasers have achieved widespread use in numerous fields of research. However, the characteristic pulse shape of such lasers, i.e., a high-peak power gain switch spike followed by a long exponentially decaying tail, is often not ideal for particular situations. These include lidar applications in which the long pulse tails can interfere with short-range return signals and studies in nonlinear phenomena where the effects of the high-peak power spikes can be partially obscured by those due to the much lower intensities present in the pulse tail. To overcome these limitations we have developed a simple means of controlling the pulse shape of a TE CO2 laser through use of an electrically triggerable, in-cavity plasma shutter.

© 1983 Optical Society of America

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