Fs-laser fabrication of photonic structures in glass: the role of glass composition

Denise M. Krol; James W. Chan; Thomas R. Huser; Subhash H. Risbud; Joseph S. Hayden

doi:10.1117/12.595762

8 October 2004 Fs-laser fabrication of photonic structures in glass: the role of glass composition

Denise M. Krol, James W. Chan, Thomas R. Huser, Subhash H. Risbud, Joseph S. Hayden

Proceedings Volume 5662, Fifth International Symposium on Laser Precision Microfabrication; (2004) https://doi.org/10.1117/12.595762
Event: Fifth International Symposium on Laser Precision Microfabrication, 2004, Nara, Japan

Abstract

The use of fs lasers to directly write phonic structures inside a glass has great potential as a fabrication method for three-dimensional all-optical integrated components. The ability to use this technique with different glass compositions --specifically tailored for a specific photonics application -- is critical to its successful exploitation. Consequently, it is important to understand how glass composition effects waveguide fabrication with fs laser pulses and how different glasses are structurally modified after exposure to fs laser pulses. We have used confocal laser spectroscopy to monitor the changes in glass structure that are associated with waveguide fabrication. Using a low power continuous wave (cw) Ar laser as excitation source we have measured both Raman and fluorescence spectra of the modified regions. Raman spectroscopy provides us with information on the network structure, whereas fluorescence measurements reveal the presence of optically active point defects in the glass. In this paper we review our work on fs-laser fabrication and characterization of photonic structures in glass and discuss the effect of glass composition on processing parameters and structural modification.

Citation Download Citation

Denise M. Krol, James W. Chan, Thomas R. Huser, Subhash H. Risbud, and Joseph S. Hayden "Fs-laser fabrication of photonic structures in glass: the role of glass composition", Proc. SPIE 5662, Fifth International Symposium on Laser Precision Microfabrication, (8 October 2004); https://doi.org/10.1117/12.595762

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