Regensburg 2010 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 60: Poster II: Optical Properties, incl. Photonic Crystals and Ultrafast Phenomena

HL 60.27: Poster

Thursday, March 25, 2010, 18:00–20:00, Poster D1

Polarization sensitive cross-sectional microphotoluminescence of disorder in AlGaAs/GaAs quantum wells

— •Lars Liebermeister and Rainer G. Ulbrich —
IV. Physikalisches Institut, Georg-August Univ. Göttingen, Germany

Polarization sensitive microphotolumniescence measurement is used to create a map of local width and orientation of a quantum well. Atomic disorder causes variation in thickness and local orientation of the quantum well. The emission of exciton states - confined in the quantum well potential - is polarized depending on the orientation of the confinement. This in-plane polarization has been measured with cross-sectional mircophotolumniescence, which gives information about width and orientation of the local quantum well.