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Microstructural imaging of high repetition rate ultrafast laser written LiTaO3 waveguides

Appl. Phys. Lett. 94, 081106 (2009); doi:10.1063/1.3088852

Published 24 February 2009

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Ben McMillen,1 Kevin P. Chen,1 and Daniel Jaque2
1Departament of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA
2Departamento de Física de Materiales C-IV, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain
The microstructural changes associated with the formation of lithium tantalate waveguides after high repetition rate ultrafast laser inscription has been investigated by confocal micro-Raman experiments. While the laser beam focal volume is characterized by significant lattice damage, no reduction of Raman mode strength has been observed at the guiding region, suggesting the preservation of the nonlinear optical coefficient in the waveguide. A general blueshift of the Raman modes has been observed at the guiding region, suggesting lattice compression as the dominant mechanism of waveguide formation. ©2009 American Institute of Physics
History: Received 19 November 2008; accepted 4 February 2009; published 24 February 2009
Permalink: http://link.aip.org/link/?APPLAB/94/081106/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.62.Cf
    Industrial applications of lasers
  • 42.79.Gn
    Optical waveguides and couplers
  • 42.65.Re
    Ultrafast processes; optical pulse generation and pulse compression
  • 42.60.Jf
    Laser beam characteristics
  • 42.86.+b
    Optical workshop techniques
  • YEAR: 2009

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