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
Applied Physics Letters 75 2
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.
Please note: There is a known bug in some browsers that causes an
error when a user tries to view large pdf file within the browser window.
If you receive the message "The file is damaged and could not be
repaired", please try one of the solutions linked below based on the
browser you are using.
Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.