Abstract
We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~ 1.4-μm high ribs in a ~ 10-μm 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 fromunstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.
Original language | Undefined |
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Article number | 10.1007/s00340-002-0952-2 |
Pages (from-to) | 15-17 |
Number of pages | 3 |
Journal | Applied physics B: Lasers and optics |
Volume | 75 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2002 |
Keywords
- IOMS-APD: Active Photonic Devices
- IR-70082
- EWI-17548