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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper QPD17

Femtosecond Laser Melting of Graphite

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Abstract

Although graphite sublimes when heated adiabatically at atmospheric pressure, molten carbon is created under pulsed laser irradiation There have been conflicting claims, however, that the liquid phase is electrically insulating2,3 or conducting4,5 The former claim is based on time-resolved optical reflectivity measurements2 using 20 ps. pulses, in which reflectivity rapidly decreased after excitation above the melting threshold, suggesting creation of an insulating liquid phase.

© 1989 Optical Society of America

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