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

Grivas, C. and Shepherd, D.P. and May-Smith, T.C. and Eason, R.W. and Pollnau, M. and Crunteanu, A. and Jelinek, M. (2003) Performance of Ar+-milled Ti:Sapphire rib waveguides as single transverse mode broadband fluorescence sources. IEEE Journal of Quantum Electronics, 39 (3). pp. 501-507. ISSN 0018-9197

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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 300 W have been observed from the ribs following excitation by a 3-W 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 (1.7 dB/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.
Item Type:	Article
Copyright:	© 2003 IEEE
Link to this item:	http://purl.utwente.nl/publications/70079
Official URL:	http://dx.doi.org/10.1109/JQE.2002.808149
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