Ti:sapphire rib waveguides as single-transverse-mode broadband fluorescence sources for optical coherence tomography applications

摘要

Rib waveguides based on pulsed-laser-deposited Ti:sapphire thin films have been fabricated by Ar of 1.12 and 1.16 respectively, indicating single-transverse-mode fluorescence emission. Fluorescence output powers up to 0.3 mW have been observed from the ribs following excitation by a 3W multiline argon laser. The experimental fluorescence output levels for ribs with different size were in satisfactory agreement with theoretical calculations based on a plane wave analysis accounting for ground state depletion.