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High numerical aperture planar waveguides

Bonner, C.L., Shepherd, D.P., Brown, C.T.A., Anderson, A.A., Warburton, T.J., Tropper, A.C., Eason, R.W. and Hanna, D.C. (1997) High numerical aperture planar waveguides At 13th National Quantum Electronics Conference (QE13), United Kingdom. 08 - 11 Sep 1997.

Record type: Conference or Workshop Item (Poster)


Rare earth doped planar crystal waveguides have the potential to yield efficient compact diode pumped lasers and amplifiers. Confinement of pump and signal to the waveguide core leads to high small-signal gains for amplifiers and, if additional propagation losses are small, low laser thresholds. The planar geometry is well matched to the asymmetric output of high average power diodes, simplifying the coupling and mode-matching requirements. The natural slab geometry is also ideal for thermal management. Coupling the highly divergent output of high power diode lasers into waveguides, either by focussing or proximity coupling, requires relatively thick waveguides (>10µm) and, especially for proximity coupling, a high numerical aperture (NA). We report two fabrication methods that can meet these requirements; pulsed laser deposition (PLD) and thermal bonding. The fabrication details and waveguide characterisation, including Ti:Sapphire pumped laser operation, will be discussed.

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Published date: 1997
Venue - Dates: 13th National Quantum Electronics Conference (QE13), United Kingdom, 1997-09-08 - 1997-09-11


Local EPrints ID: 76738
PURE UUID: 5e7363a7-8972-4724-a6b6-3c7c1b27563b
ORCID for D.P. Shepherd: ORCID iD
ORCID for R.W. Eason: ORCID iD

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:38

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Author: C.L. Bonner
Author: D.P. Shepherd ORCID iD
Author: C.T.A. Brown
Author: A.A. Anderson
Author: T.J. Warburton
Author: A.C. Tropper
Author: R.W. Eason ORCID iD
Author: D.C. Hanna

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