Ultrashort mach-zehnder space switch based on quantum dots

R. Prasanth, J.E.M. Haverkort, J.H. Wolter

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

We investigate whether the discrete energy levels and the high peak absorption in quantum dots (QDs) provide an opportunity for increasing the electro-optic and nonlinear optical properties. For this purpose we calculate the electrorefraction spectra of QDs starting from the Luttinger-Kohn Hamiltonian and using a plane-wave expansion for solving the eigenstates of the QD. For a pyramidal InAs/GaAs quantum dot, we find a high peak electrorefraction of 0.35 for TE-polarization, which is 35x larger than in a quantum well. In the tail of the quantum dot absorption spectrum, we find an electrorefraction of 1.3.10-2 at an absorption loss of 0.15 dB/cm. Finally we investigate the refractive index variation due to state filling in InAs/InP cylindrical quantum dots.
Originele taal-2Engels
TitelSmart Structures and Materials: Modeling, Signal Processing, and Control, 15-18 March 2004, San Diego, U.S.A.
Plaats van productieUnited States, San Diego
Pagina's531-538
DOI's
StatusGepubliceerd - 2004

Publicatie series

NaamProceedings of SPIE
Volume5383
ISSN van geprinte versie0277-786X

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  • Citeer dit

    Prasanth, R., Haverkort, J. E. M., & Wolter, J. H. (2004). Ultrashort mach-zehnder space switch based on quantum dots. In Smart Structures and Materials: Modeling, Signal Processing, and Control, 15-18 March 2004, San Diego, U.S.A. (blz. 531-538). (Proceedings of SPIE; Vol. 5383). United States, San Diego. https://doi.org/10.1117/12.536777