The University of Southampton
University of Southampton Institutional Repository

High-reflectivity Bragg gratings fabricated by 248-nm excimer laser holographic ablation in thin Ta2O5 films overlaid on glass waveguides

High-reflectivity Bragg gratings fabricated by 248-nm excimer laser holographic ablation in thin Ta2O5 films overlaid on glass waveguides
High-reflectivity Bragg gratings fabricated by 248-nm excimer laser holographic ablation in thin Ta2O5 films overlaid on glass waveguides
We demonstrate strong Bragg grating reflection in Ta2O5 (tantalum pentoxide) thin films overlaid on potassium ion-exchanged channel waveguides in BK-7 glass, inscribed using 248-nm excimer laser holographic ablation. The experimental data presented are divided into two sections: the first section refers to the study of the grating ablation process of thin Ta2O5 films with respect to the exposure conditions, while the second focuses on the implementation of these relief gratings in functional waveguide devices. Firstly, experimental data on grating morphology versus exposure conditions, accomplished with scanning electron microscopy microscans, are presented. In the second section diffraction spectra for waveguide gratings are presented and analysed. Spectral notches in transmission of depth -18 dB for the TM polarisation were obtained from 16-mm-long gratings patterned in waveguides overlaid with a 105-nm-thick Ta2O5 film, using 50 pulses of 60 mJ/cm2 energy density.
0947-8396
1093-1096
Pissadakis, S.
a91c54e0-3b8d-479f-b44e-e678bc34a277
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Pissadakis, S.
a91c54e0-3b8d-479f-b44e-e678bc34a277
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca

Pissadakis, S., Zervas, Michael, Reekie, L. and Wilkinson, J.S. (2004) High-reflectivity Bragg gratings fabricated by 248-nm excimer laser holographic ablation in thin Ta2O5 films overlaid on glass waveguides. Applied Physics A: Materials Science & Processing, 79 (4-6), 1093-1096. (doi:10.1007/s00339-004-2653-7).

Record type: Article

Abstract

We demonstrate strong Bragg grating reflection in Ta2O5 (tantalum pentoxide) thin films overlaid on potassium ion-exchanged channel waveguides in BK-7 glass, inscribed using 248-nm excimer laser holographic ablation. The experimental data presented are divided into two sections: the first section refers to the study of the grating ablation process of thin Ta2O5 films with respect to the exposure conditions, while the second focuses on the implementation of these relief gratings in functional waveguide devices. Firstly, experimental data on grating morphology versus exposure conditions, accomplished with scanning electron microscopy microscans, are presented. In the second section diffraction spectra for waveguide gratings are presented and analysed. Spectral notches in transmission of depth -18 dB for the TM polarisation were obtained from 16-mm-long gratings patterned in waveguides overlaid with a 105-nm-thick Ta2O5 film, using 50 pulses of 60 mJ/cm2 energy density.

Full text not available from this repository.

More information

Published date: 2004

Identifiers

Local EPrints ID: 46099
URI: http://eprints.soton.ac.uk/id/eprint/46099
ISSN: 0947-8396
PURE UUID: 796bad82-8737-42fe-a5e3-b65fbbc7f90d
ORCID for Michael Zervas: ORCID iD orcid.org/0000-0002-0651-4059
ORCID for J.S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 22 May 2007
Last modified: 18 Feb 2021 16:39

Export record

Altmetrics

Contributors

Author: S. Pissadakis
Author: Michael Zervas ORCID iD
Author: L. Reekie
Author: J.S. Wilkinson ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×