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Thermal poling induced second-order nonlinearity in femtosecond- laser-modified fused silica

Appl. Phys. Lett. 93, 061115 (2008); doi:10.1063/1.2973149

Published 15 August 2008

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Honglin An,1 Simon Fleming,1 Benjamin W. McMillen,2 Kevin P. Chen,2 and David Snoke3
1Optical Fibre Technology Centre, University of Sydney, 206 National Innovation Centre, Australian Technology Park, Eveleigh, New South Wales 1430, Australia
2Department of Electrical and Computer Engineering, University of Pittsburgh, Pennsylvania 15261, USA
3Department of Physics, University of Pittsburgh, Pennsylvania 15261, USA
Thermal poling was utilized to induce second-order nonlinearity in regions of fused silica modified by 771 nm femtosecond laser pulses. With second-harmonic microscopy, it was found that the nonlinearity in the laser-modified region was much lower than that in nonmodified regions. This is attributed to a more rigid glass network after irradiation by the femtosecond laser pulses and/or lack of mobile alkali ions. Measurement of the distribution of chemical elements in the femtosecond-laser-modified region in a soda lime glass revealed a lower level of sodium ions. ©2008 American Institute of Physics
History: Received 9 May 2008; accepted 29 July 2008; published 15 August 2008
Permalink: http://link.aip.org/link/?APPLAB/93/061115/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.70.Ce
    Optical glasses, quartz
  • 61.80.Ba
    Ultraviolet, visible, and infrared radiation effects
  • 42.65.Re
    Ultrafast processes; optical pulse generation and pulse compression
  • 42.65.Ky
    Optical frequency conversion; harmonic generation
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (15)
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