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Applied Physics Letters / Volume 94 / Issue 1 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 94, 011115 (2009); doi:10.1063/1.3058820 (3 pages)

Two-photon patterning of a polymer containing Y-shaped azochromophores

A. Ambrosio1, E. Orabona1, P. Maddalena1, A. Camposeo2, M. Polo2, A. A. R. Neves2, D. Pisignano2, A. Carella3, F. Borbone3, and A. Roviello3

1Dipartimento di Scienze Fisiche and CNR-INFM CRS-COHERENTIA, Università degli Studi Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, I-80126 Napoli, Italy
2CNR-INFM National Nanotechnology Laboratory, Distretto Tecnologico ISUFI, Università del Salento, via Arnesano, I-73100 Lecce, Italy
3Dipartimento di Chimica, Università degli Studi Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, I-80126 Napoli, Italy

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(Received 1 September 2008; accepted 8 December 2008; published online 9 January 2009)

We report on the patterning of the free surface of azo-based polymer films by means of mass migration driven by one- or two-photon absorption. A symmetric donor-acceptor-donor structured Y-shaped azochromophore is specifically synthesized to enhance two-photon absorption in the polymer. The exposure of the polymer film to a focused laser beam results in light-driven mass migration for both one- and two-photon absorptions. Features with subdiffraction resolution (250 nm) are realized and the patterning dynamics is investigated as a function of the light dose. Furthermore, functional photonic structures, such as diffraction gratings with periods ranging between 0.5 and 2.0 μm, have been realized.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

diffraction gratings, laser beam effects, laser materials processing, nanopatterning, optical fabrication, optical films, optical polymers, polymer films, two-photon processes

PACS

  • 82.50.Pt

    Multiphoton processes

  • 33.00.00

    Molecular properties and interactions with photons

  • 81.16.-c

    Methods of micro- and nanofabrication and processing

  • 68.47.Mn

    Polymer surfaces

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.3058820

PUBLICATION DATA

ISSN:

0003-6951 (print)  
1077-3118 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

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