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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/38050

Title: Demonstration of high-brightness-mode propagation in a compound waveguide structure
Author: HEGARTY, JOHN
Sponsor: European Union (EU)
Author's Homepage: http://people.tcd.ie/jhegarty
Keywords: Physics
Issue Date: 1999
Publisher: American Institute of Physics
Citation: Patchell, J. A.; Logue, F. P.; O'Gorman, J.; Hegarty, J.; Usievich, B. A.; Sychugov, V. A., Demonstration of high-brightness-mode propagation in a compound waveguide structure, Applied Physics Letters, 75, (2), 1999, p169 - 171
Series/Report no.: Applied Physics Letters
75
2
Abstract: We demonstrate the existence of an unusual and useful high-brightness guided mode of a multimode AlGaAs/GaAs heterostructure compound slab waveguide. This mode has a narrow near-field single lobe confined to the low-index regions of the waveguide. This mode was selectively probed by optically exciting quantum wells optimally placed in the waveguide. By pumping in a stripe geometry, lasing is observed above a threshold of 80 kW/cm2 indicating efficient lasing in the highest-order waveguide mode. The near-field emission pattern of the waveguide was imaged to provide a direct measurement of the intensity profile of the higher-order mode.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/38050
Related links: http://link.aip.org/link/?APPLAB/75/169/1
Appears in Collections:Administrative Staff Authors (Scholarly Publications)

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