Abstract
An ultra-fast mechanical optical switch is described using an exploding thin film to clear optical paths in times less than 0.5 μsec. Metallic films of 1000-A thickness were vacuum-deposited on a glass substrate and disintegrated by passage of a 90-nsec kA current pulse. Best results were obtained in the absence of vaporization.A possible application of the device is seen in gating high-speed rotating mirror cameras.
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