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

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

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 spiropyr...

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Veröffentlicht in:Applied physics. B, Lasers and optics Lasers and optics, 2003-06, Vol.76 (6), p.707-710
Hauptverfasser: KONOROV, S. O, FEDOTOV, A. B, ZHELTIKOV, A. M
Format: Artikel
Sprache:eng
Schlagworte:
Lasers
Micromachining
Monitoring
On-line systems
Photochromism
Polymethyl methacrylates
Scanning
Spiropyrans
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container_issue 6
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container_title Applied physics. B, Lasers and optics
container_volume 76
creator KONOROV, S. O
FEDOTOV, A. B
ZHELTIKOV, A. M
description 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.
doi_str_mv 10.1007/s00340-003-1202-y
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subjects Lasers
Micromachining
Monitoring
On-line systems
Photochromism
Polymethyl methacrylates
Scanning
Spiropyrans
title Three-dimensional reversible laser micromachining with subnanojoule femtosecond pulses based on two-photon photochromism
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