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Performance of Ar+-milled Ti:sapphire rib waveguides as single transverse mode broadband fluorescent sources

Performance of Ar+-milled Ti:sapphire rib waveguides as single transverse mode broadband fluorescent sources
Performance of Ar+-milled Ti:sapphire rib waveguides as single transverse mode broadband fluorescent sources
Rib waveguides have been fabricated in pulsed-laser-deposited Ti:sapphire layers using photolithographic patterning and subsequent Ar+-beam milling. Fluorescence output powers up to 300µW have been observed from the ribs following excitation by a 3W multiline argon laser. Mode intensity profiles show high optical confinement and the measured beam propagation factors Mx2 and My2 of 1.12 and 1.16 respectively, indicate single transverse mode fluorescence emission. Loss measurements using the self-pumped phase conjugation technique have yielded comparable values (1.7dB/cm) for the ribs and the unstructured planar waveguide counterparts. The combination of optimum modal properties and strong optical confinement, together with sufficient levels of fluorescence output, make the single-moded Ti:sapphire rib waveguides a very interesting candidate as a fluorescence source for optical coherence tomography applications.
0018-9197
501-507
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
May-Smith, Timothy
47952bbd-ce28-4507-a723-b4d80bf0f809
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
Crunteanu, A.
fca22bc1-40b6-474f-8d0a-e1c1b9206b4c
Jelínek, M.
058ae7ba-cd86-4f99-990e-2e8f78cd4484
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
May-Smith, Timothy
47952bbd-ce28-4507-a723-b4d80bf0f809
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
Crunteanu, A.
fca22bc1-40b6-474f-8d0a-e1c1b9206b4c
Jelínek, M.
058ae7ba-cd86-4f99-990e-2e8f78cd4484

Grivas, C., Shepherd, David, May-Smith, Timothy, Eason, R.W., Pollnau, M., Crunteanu, A. and Jelínek, M. (2003) Performance of Ar+-milled Ti:sapphire rib waveguides as single transverse mode broadband fluorescent sources. IEEE Journal of Quantum Electronics, 39 (3), 501-507. (doi:10.1109/JQE.2002.808149).

Record type: Article

Abstract

Rib waveguides have been fabricated in pulsed-laser-deposited Ti:sapphire layers using photolithographic patterning and subsequent Ar+-beam milling. Fluorescence output powers up to 300µW have been observed from the ribs following excitation by a 3W multiline argon laser. Mode intensity profiles show high optical confinement and the measured beam propagation factors Mx2 and My2 of 1.12 and 1.16 respectively, indicate single transverse mode fluorescence emission. Loss measurements using the self-pumped phase conjugation technique have yielded comparable values (1.7dB/cm) for the ribs and the unstructured planar waveguide counterparts. The combination of optimum modal properties and strong optical confinement, together with sufficient levels of fluorescence output, make the single-moded Ti:sapphire rib waveguides a very interesting candidate as a fluorescence source for optical coherence tomography applications.

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Published date: 2003

Identifiers

Local EPrints ID: 13890
URI: http://eprints.soton.ac.uk/id/eprint/13890
ISSN: 0018-9197
PURE UUID: 93ae1cf0-f955-40ea-ac68-bbde5ada9f31
ORCID for David Shepherd: ORCID iD orcid.org/0000-0002-4561-8184
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

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Date deposited: 22 Dec 2004
Last modified: 05 Nov 2019 02:07

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