Ion-exchanged tapered waveguide laser in neodymium-doped BK7 glass
Ion-exchanged tapered waveguide laser in neodymium-doped BK7 glass
We report what is to our knowledge the first operation of a planar dielectric tapered-waveguide laser. The waveguide laser is fabricated by potassium-ion exchange in Nd3+ -doped BK7 glass and consists of a single-mode channel waveguide of a few micrometers' width followed by a linear taper up to a broad region with a width of 180µm. A slope efficiency of 42% is found both in the tapers and in standard channel waveguides fabricated upon the same substrate, indicating that the tapers and the channels have similar internal losses; hence the low-loss nature of the tapered beam expansion. The output from either end of the tapered structure is found to be nearly diffraction limited.
1433-1435
Hettrick, Simon
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Mackenzie, Jacob
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Harris, R.D.
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Wilkinson, J.S.
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Tropper, Anne
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Shepherd, David
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1 October 2000
Hettrick, Simon
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Mackenzie, Jacob
1d82c826-fdbf-425b-ac04-be43ccf12008
Harris, R.D.
e972b676-3335-44cd-b6e8-0dae17c550c3
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Tropper, Anne
f3505426-e0d5-4e91-aed3-aecdb44b393c
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Hettrick, Simon, Mackenzie, Jacob, Harris, R.D., Wilkinson, J.S., Tropper, Anne and Shepherd, David
(2000)
Ion-exchanged tapered waveguide laser in neodymium-doped BK7 glass.
Optics Letters, 25 (19), .
(doi:10.1364/OL.25.001433).
Abstract
We report what is to our knowledge the first operation of a planar dielectric tapered-waveguide laser. The waveguide laser is fabricated by potassium-ion exchange in Nd3+ -doped BK7 glass and consists of a single-mode channel waveguide of a few micrometers' width followed by a linear taper up to a broad region with a width of 180µm. A slope efficiency of 42% is found both in the tapers and in standard channel waveguides fabricated upon the same substrate, indicating that the tapers and the channels have similar internal losses; hence the low-loss nature of the tapered beam expansion. The output from either end of the tapered structure is found to be nearly diffraction limited.
Text
2007
- Author's Original
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Published date: 1 October 2000
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Local EPrints ID: 13634
URI: http://eprints.soton.ac.uk/id/eprint/13634
ISSN: 0146-9592
PURE UUID: 59165507-4fed-4e83-90f5-7dcb6d0a3bdb
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Date deposited: 31 Dec 2004
Last modified: 06 Dec 2024 02:37
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Contributors
Author:
Simon Hettrick
Author:
Jacob Mackenzie
Author:
R.D. Harris
Author:
Anne Tropper
Author:
David Shepherd
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