Optical non-linearities in III/V quantum dots

J.E.M. Haverkort, R. Prasanth, S. Dilna, E.W. Bogaart, A. Deepthy, J.J.G.M. Tol, van der, E.A. Patent, G. Zhao, Q. Gong, P.J. Veldhoven, van, R. Nötzel, J.H. Wolter

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


We report all-optical switching due to state-filling in quantum dots (QDs). The switching energy is as low as 6 fJ since state-filling requires only 2 electron-hole pairs per QD. The single layer of InAs/InP QDs is inserted within a InGaAsP/InP waveguide, which is processed into a Mach-Zehnder Interferometric space switch (MZI). A 1530-1570 nm probe beam is switched by optical excitation of one MZI-arm from above. By exciting below the InGaAsP bandgap, we prove that the refractive index nonlinearity is entirely due to state-filling in the QDs.
Original languageEnglish
Title of host publicationProc. [CD-ROM] Photonics 2004 Cochin, India (2004) (invited presentation)
Place of PublicationCochin, India
Publication statusPublished - 2004
EventPhotonics 2004, Cochin, India - Cochin, India
Duration: 1 Jan 2004 → …


ConferencePhotonics 2004, Cochin, India
Period1/01/04 → …
OtherPhotonics 2004


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