TITLE

Theoretical investigation on polarization control of semipolar-oriented InGaN quantum-well emission using (Al)InGaN alloy substrates

AUTHOR(S)
Yamaguchi, A. Atsushi
PUB. DATE
May 2009
SOURCE
Applied Physics Letters;5/18/2009, Vol. 94 Issue 20, p201104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The polarization properties of InGaN quantum wells on semipolar AlInGaN alloy substrates are calculated numerically using a 6×6·k·p Hamiltonian. It is shown that the polarization direction of quantum-well emission changes, depending on the substrate alloy composition and quantum-well width, and that this polarization switching is caused by the strain anisotropy and quantum confinement effects in the quantum wells. The calculation results indicate that InGaN or AlInGaN alloy substrates can be beneficial in obtaining desirable polarization properties for the formation of cleaved-facet cavity mirrors in laser diodes on semipolar substrates.
ACCESSION #
40125754

 

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