Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide
Crunteanu, A., Pollnau, M., Jaenchen, G., Hibert, C., Hoffman, P., Salathe, R.P., Eason, R.W., Grivas, C. and Shepherd, D.P. (2002) Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide. Applied Physics B: Lasers and Optics, 75, (1), 15-17. (doi:10.1007/s00340-002-0952-2)
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Official URL: http://dx.doi.org/10.1007/s00340-002-0952-2
Description/Abstract
We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~1.4-7m high ribs in a ~10-7m 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 from unstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.
| Item Type: | Article |
|---|---|
| ISSN: | 0946-2171 (print) |
| Related URLs: | http://dx.doi.org/10.1007/s003...002-0952-2 |
| Subjects: | T Technology > T Technology (General) Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > Optoelectronics Research Centre |
| ePrint ID: | 13778 |
| Deposited On: | 11 Jan 2005 |
| Last Modified: | 01 Jun 2011 07:05 |
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