title: Twin extra-high photoluminescence in resonant double-period quantum wells.
abstract: Twin extra high photoluminescence (PL) in resonant quasi-periodic double-period quantum wells (DPQWs) for higher-generation orders is demonstrated. In the DPQW, the number of maxima in the maximum values of the PL intensity is two, which is different from other quasi-periodic quantum wells (QWs) and traditional periodic QWs. The maximum PL intensity in a DPQW is also stronger than that in a periodic QW under the anti-Bragg condition and that in a Fibonacci QW. Although the peaks of the squared electric field for the twin PL are both located near the QWs, their field profiles are distinct.
authors.forename: C H
authors.initials: CH
authors.lastname: Chang
authors.forename: Y H
authors.initials: YH
authors.lastname: Cheng
authors.forename: W J
authors.initials: WJ
authors.lastname: Hsueh