Femtosecond laser irradiation of polymethylmethacrylate for refractive index gratings

P.J. Scully, D. Jones, D.A. Jaroszynski

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Polymethylmethacrylate (PMMA) or Perspex is an inexpensive polymer widely used for making the cores of communications grade polymer optical fibres (POFs) and as a substrate for polymer optoelectronic devices and integrated waveguides. Periodic refractive index structures have been written in undoped PMMA using multiple pulses of 40 fs duration from a 1 kHz Ti:sapphire femtosecond laser operating at the fundamental (800 nm). A refractive index change (Δn) of 5 ± 0.5 × 10−4 was observed before the onset of striations. Optimization of writing conditions for refractive index modification of POF fibres or bulk undoped PMMA will enable structures such as Bragg gratings, long-period gratings, mode couplers, microlens arrays, and zone plates to be written.
LanguageEnglish
PagesS92-S96
JournalJournal of Optics A: Pure and Applied Optics
Volume5
Issue number4
DOIs
Publication statusPublished - Jul 2003

Fingerprint

gratings
refractivity
irradiation
polymers
lasers
optical fibers
Perspex (trademark)
striation
optoelectronic devices
couplers
Bragg gratings
grade
sapphire
communication
waveguides
optimization
fibers
pulses

Keywords

  • polymethylmethacrylate
  • polymer optical fibre
  • refractive index
  • femtosecond laser

Cite this

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abstract = "Polymethylmethacrylate (PMMA) or Perspex is an inexpensive polymer widely used for making the cores of communications grade polymer optical fibres (POFs) and as a substrate for polymer optoelectronic devices and integrated waveguides. Periodic refractive index structures have been written in undoped PMMA using multiple pulses of 40 fs duration from a 1 kHz Ti:sapphire femtosecond laser operating at the fundamental (800 nm). A refractive index change (Δn) of 5 ± 0.5 × 10−4 was observed before the onset of striations. Optimization of writing conditions for refractive index modification of POF fibres or bulk undoped PMMA will enable structures such as Bragg gratings, long-period gratings, mode couplers, microlens arrays, and zone plates to be written.",
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Femtosecond laser irradiation of polymethylmethacrylate for refractive index gratings. / Scully, P.J.; Jones, D.; Jaroszynski, D.A.

In: Journal of Optics A: Pure and Applied Optics, Vol. 5, No. 4, 07.2003, p. S92-S96.

Research output: Contribution to journalArticle

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AU - Scully, P.J.

AU - Jones, D.

AU - Jaroszynski, D.A.

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AB - Polymethylmethacrylate (PMMA) or Perspex is an inexpensive polymer widely used for making the cores of communications grade polymer optical fibres (POFs) and as a substrate for polymer optoelectronic devices and integrated waveguides. Periodic refractive index structures have been written in undoped PMMA using multiple pulses of 40 fs duration from a 1 kHz Ti:sapphire femtosecond laser operating at the fundamental (800 nm). A refractive index change (Δn) of 5 ± 0.5 × 10−4 was observed before the onset of striations. Optimization of writing conditions for refractive index modification of POF fibres or bulk undoped PMMA will enable structures such as Bragg gratings, long-period gratings, mode couplers, microlens arrays, and zone plates to be written.

KW - polymethylmethacrylate

KW - polymer optical fibre

KW - refractive index

KW - femtosecond laser

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