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Raman spectroscopy of femtosecond laser written low propagation loss optical waveguides in Schott N-SF8 glass

Raman spectroscopy of femtosecond laser written low propagation loss optical waveguides in Schott N-SF8 glass
Raman spectroscopy of femtosecond laser written low propagation loss optical waveguides in Schott N-SF8 glass
We have performed high repetition rate femtosecond laser bulk modification of TiO2-SiO2 based glass (Schott N-SF8 glass), leading to a decrease in the refractive index near the focal volume. From Raman and X-ray microanalysis we have associated the decrease in the refractive index to a volume expansion due to glass network modifications induced by the laser irradiation. By writing two lines close together we have been able to confine the optical mode and obtain propagation losses of 0.7 dB/cm in the near infrared.
Ultrafast lasers, Glass waveguides, Raman spectroscopy
626-631
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559

Gholipour, Behrad (2017) Raman spectroscopy of femtosecond laser written low propagation loss optical waveguides in Schott N-SF8 glass. Optical Materials, 72, 626-631. (doi:10.1016/j.optmat.2017.07.002).

Record type: Article

Abstract

We have performed high repetition rate femtosecond laser bulk modification of TiO2-SiO2 based glass (Schott N-SF8 glass), leading to a decrease in the refractive index near the focal volume. From Raman and X-ray microanalysis we have associated the decrease in the refractive index to a volume expansion due to glass network modifications induced by the laser irradiation. By writing two lines close together we have been able to confine the optical mode and obtain propagation losses of 0.7 dB/cm in the near infrared.

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Raman spectroscopy of femtosecond laser written low - Accepted Manuscript
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Accepted/In Press date: 2 July 2017
e-pub ahead of print date: 10 July 2017
Keywords: Ultrafast lasers, Glass waveguides, Raman spectroscopy

Identifiers

Local EPrints ID: 413314
URI: http://eprints.soton.ac.uk/id/eprint/413314
PURE UUID: 60967324-1357-4942-9285-f783ea1eeae9

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Date deposited: 21 Aug 2017 16:31
Last modified: 15 Mar 2024 15:43

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Contributors

Author: Behrad Gholipour

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