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.
Original language | Undefined |
---|---|
Article number | 10.1109/JQE.2002.808149 |
Pages (from-to) | 501-507 |
Number of pages | 7 |
Journal | IEEE journal of quantum electronics |
Volume | 39 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2003 |
Keywords
- IR-70079
- Ion beam applications
- Lithography
- Laser ablation
- optical tomography
- Optical waveguides
- loss measurement
- rib waveguides
- EWI-17545
- IOMS-APD: Active Photonic Devices