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A combined investigation of lateral and vertical Stark effect in InAs self-assembled quantum dots in waveguide structures

✍ Scribed by O Wolst; M Schardt; M Kahl; S Malzer; G.H Döhler

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 400 KB
Volume: 13
Category: Article
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(01)00538-0

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✦ Synopsis

An investigation of the transmission spectra as a function of electric ÿeld and light polarization in self-assembled InAs quantum dots has been performed. To have access to both vertical and lateral ÿelds with respect to the growth direction, and to allow for polarization-dependent measurements, the samples were fabricated as waveguide structures. In the case of the vertical ÿeld, a quadratic Stark e ect is observed not only in the TE-mode, but also in the TM-mode indicating the participation of light holes. In the lateral ÿeld, no Stark shift is observed, but there is a strong change in oscillator strength.

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