Femtosecond laser writing of waveguides in zinc phosphate glasses [Invited]

We have studied the relationship between the initial glass composition and the structural changes associated with laser-induced refractive index modification in a series of Er-Yb doped and undoped zinc phosphate glasses. White light microscopy and waveguide experiments are used together with Raman a...

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Published in:Optical materials express 2011-09, Vol.1 (5), p.845-855
Main Authors: Fletcher, Luke B., Witcher, Jonathan J., Troy, Neil, Reis, Signo T., Brow, Richard K., Vazquez, Rebeca Martinez, Osellame, Roberto, Krol, Denise M.
Format: Article
Language:English
Subjects:
Devices
Fluorescence
Glass
Phosphate glass
Three dimensional
Waveguides
White light
Zinc phosphate
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creator Fletcher, Luke B.
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description We have studied the relationship between the initial glass composition and the structural changes associated with laser-induced refractive index modification in a series of Er-Yb doped and undoped zinc phosphate glasses. White light microscopy and waveguide experiments are used together with Raman and fluorescence spectroscopy to characterize the structural changes. The correlation between Raman peak shifts and fluorescence from phosphorus-oxygen hole center (POHC) defects indicates that fs-laser writing results in a depolymerization of the phosphate glass network. The results also show that the exact glass composition should be taken into account when fabricating waveguide devices in phosphate glasses, in order to both expand the fs-laser processing conditions and maximize favorable morphological changes for 3-D photonic devices.
doi_str_mv 10.1364/OME.1.000845
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subjects Devices
Fluorescence
Glass
Phosphate glass
Three dimensional
Waveguides
White light
Zinc phosphate
title Femtosecond laser writing of waveguides in zinc phosphate glasses [Invited]
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