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Micromachining using ultrashort pulses from a laser oscillator

CHRIS B. SCHAFFER and ERIC MAZUR

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Abstract

Oscillator-only micromachining in action. A train of femtosecond pulses from a laser oscillator is focused by a microscope objective into a thin glass sample.The bright blue spark is due to recombination of the electrons that are nonlinearly ionized by the pulses. Permanent structural changes are produced in the material at the laser focus.

© 2001 Optical Society of America

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