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Logue, F. P.; Patchell, J.; O’Gorman, J.; Hegarty, J.; Usievich, B. A.; Sychugov, V A

doi:10.1023/a:1007090529976

Cited by 1 publication

(2 citation statements)

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“…In a separate report 6 we show that guided modes such as the one observed in this work significantly enhance the brightness characteristics of guided wave optical components. Because of the narrow emission lobe of this mode, narrower even than the lowest-order ͑fundamental͒ guided mode, single-mode fiber coupling can be significantly increased.…”

Section: Figsupporting

confidence: 54%

“…Reference 5 describes a compound waveguide structure which supports a higher-order ''supermode.'' We show numerically in a separate publication 6 that this mode considerably increases the guided-mode brightness over that of conventional laser diode waveguides of equivalent dimension. Furthermore, we demonstrate the brightness increase by comparing the coupling efficiency of the emission from a 61 m aperture compound waveguide, which we call a LO-GUIDE, to a single-mode fiber with that of a conventional high-power multimode ridge waveguide structure.…”

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confidence: 85%

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Demonstration of high-brightness-mode propagation in a compound waveguide structure

Patchell

Logue

O’Gorman

et al. 1999

Applied Physics Letters

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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.

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Section: Figsupporting

confidence: 54%

mentioning

confidence: 85%