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Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide

Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide
Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide
We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~1.4µm high ribs in a ~10µm thick Ti:sapphire planar waveguide by reactive ion etching. Following excitation by an Ar-ion laser, the rib structure showed channel-waveguide fluorescence emission. The mode profiles and the beam-parameter values (M2) were measured. The coupling efficiency of fluorescence emission into a single-mode fiber was an order of magnitude higher than for fluorescence from unstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.
0946-2171
15-17
Crunteanu, A.
fca22bc1-40b6-474f-8d0a-e1c1b9206b4c
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
Jaenchen, G.
05a2ec93-8b26-438c-80fa-0491dbcb7932
Hibert, C.
515ac1ee-e7c6-4e28-b288-0dc58d74d1de
Hoffmann, P.
495ac254-80a3-4627-88c9-20f601582bc2
Salathé, R.P.
ea67db6b-9d3a-4221-bb07-fc20064d2758
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Grivas, Christos
7f564818-0ac0-4127-82a7-22e87ac35f1a
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Crunteanu, A.
fca22bc1-40b6-474f-8d0a-e1c1b9206b4c
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
Jaenchen, G.
05a2ec93-8b26-438c-80fa-0491dbcb7932
Hibert, C.
515ac1ee-e7c6-4e28-b288-0dc58d74d1de
Hoffmann, P.
495ac254-80a3-4627-88c9-20f601582bc2
Salathé, R.P.
ea67db6b-9d3a-4221-bb07-fc20064d2758
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Grivas, Christos
7f564818-0ac0-4127-82a7-22e87ac35f1a
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead

Crunteanu, A., Pollnau, M., Jaenchen, G., Hibert, C., Hoffmann, P., Salathé, R.P., Eason, R.W., Grivas, Christos and Shepherd, David (2002) Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide. Applied Physics B: Lasers and Optics, 75 (1), 15-17. (doi:10.1007/s00340-002-0952-2).

Record type: Article

Abstract

We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~1.4µm high ribs in a ~10µm thick Ti:sapphire planar waveguide by reactive ion etching. Following excitation by an Ar-ion laser, the rib structure showed channel-waveguide fluorescence emission. The mode profiles and the beam-parameter values (M2) were measured. The coupling efficiency of fluorescence emission into a single-mode fiber was an order of magnitude higher than for fluorescence from unstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.

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Published date: 2002

Identifiers

Local EPrints ID: 13778
URI: http://eprints.soton.ac.uk/id/eprint/13778
ISSN: 0946-2171
PURE UUID: 7d04dea7-b852-4c3f-a689-c8b44ba8c758
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204
ORCID for David Shepherd: ORCID iD orcid.org/0000-0002-4561-8184

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Date deposited: 11 Jan 2005
Last modified: 18 Feb 2021 16:37

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Contributors

Author: A. Crunteanu
Author: M. Pollnau
Author: G. Jaenchen
Author: C. Hibert
Author: P. Hoffmann
Author: R.P. Salathé
Author: R.W. Eason ORCID iD
Author: Christos Grivas
Author: David Shepherd ORCID iD

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