Applied Physics B

, Volume 76, Issue 6, pp 707–710

Three-dimensional reversible laser micromachining with subnanojoule femtosecond pulses based on two-photon photochromism

  • S.O. Konorov
  • A.B. Fedotov
  • A.M. Zheltikov
Rapid communication

DOI: 10.1007/s00340-003-1202-y

Cite this article as:
Konorov, S., Fedotov, A. & Zheltikov, A. Appl Phys B (2003) 76: 707. doi:10.1007/s00340-003-1202-y
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Abstract.

Three-dimensional reversible laser micromachining of polymer materials based on two-photon photochromism is demonstrated. Unamplified 60-fs, 0.5-nJ pulses of 790-nm Ti:sapphire laser radiation are used to induce a refractive-index change in a polymethyl methacrylate (PMMA) sample doped with spiropyran molecules through a two-photon absorption process. Waveguides are written in the bulk of spiropyran-doped PMMA samples by scanning these samples with respect to a tightly focused Ti:sapphire laser beam. Laser-induced fluorescence is used for on-line monitoring of the laser-micromachining process. The structures written in photochromic samples can be erased and reconfigured due to the reversibility of the photochromic effect.

PACS: 42.70.Jk; 42.79.Gn 

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • S.O. Konorov
    • 1
  • A.B. Fedotov
    • 1
  • A.M. Zheltikov
    • 1
  1. 1.Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, 119899 Moscow, RussiaRU

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