Ion-exchanged tapered waveguide laser in neodymium-doped BK7 glass
Hettrick, S.J., Mackenzie, J.I., Harris, R.D., Wilkinson, J.S., Tropper, A.C. and Shepherd, D.P. (2000) Ion-exchanged tapered waveguide laser in neodymium-doped BK7 glass. Optics Letters, 25, (19), 1433-1435.
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Description/Abstract
We report what is to our knowledge the first operation of a planar dielectric tapered-waveguide laser. The waveguide laser is fabricated by potassium-ion exchange in Nd3+ -doped BK7 glass and consists of a single-mode channel waveguide of a few micrometers' width followed by a linear taper up to a broad region with a width of 180μm. A slope efficiency of 42% is found both in the tapers and in standard channel waveguides fabricated upon the same substrate, indicating that the tapers and the channels have similar internal losses; hence the low-loss nature of the tapered beam expansion. The output from either end of the tapered structure is found to be nearly diffraction limited.
| Item Type: | Article |
|---|---|
| Related URLs: | |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | University Structure - Pre August 2011 > Optoelectronics Research Centre |
| Item ID: | 13634 |
| Date Deposited: | 31 Dec 2004 |
| Last Modified: | 24 Jan 2013 16:50 |
| Contributors: | Hettrick, S.J. (Author) Mackenzie, J.I. (Author) Harris, R.D. (Author) Wilkinson, J.S. (Author) Tropper, A.C. (Author) Shepherd, D.P. (Author) |
| Date: | 2000 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/13634 |
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