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Conferences > CLEOPR > 1995 > FH > FH3
  • The Pacific Rim Conference on Lasers and Electro-Optics
  • Technical Digest Series (Optica Publishing Group, 1995),
  • paper FH3

Ablation of poly-fluorocarbon films with femtosecond and picosecond Ti:sapphire laser pulses

Shinki Nakamura, Hiroshi Kumagai, Katsumi Midorikawa, Minoru Ohara, and Koichi Toyoda

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Abstract

We have demonstrated ablation of polyfluorocarbon films with femtosecond Ti: sapphire laser pulses.1,2 A photon energy of the absorption edge of PTFE is five times as large as that of Ti:sapphire laser. This large difference of the photon energies are overcome by nonlinear absorption caused by high intensity of the Ti:sapphire laser. The ultrashort pulse width plays a significant role to increase the effective absorption, resulting in minimizing energy loss.

© 1995 IEEE

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