Tuning and imaging random photonic modes

Francesco Riboli, Niccolò Caselli, Silvia Vignolini, Francesca Intonti, Kevin Vynck, Pierre Barthelemy, Annamaria Gerardino, Laurent Balet, Lianhe H. Li, Andrea Fiore, Diederik S. Wiersma, Massimo Gurioli

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


We demonstrate experimentally the ability to control the properties of an individual photonic mode in a two-dimensional disordered photonic GaAs slab. The random modes can be fine-tuned by local sub-micrometer-scale oxidation of the semiconductor slab and their frequency can be gradually shifted. In particular we demonstrate the tuning of a selected mode to spectral superposition with the frequency of other two modes, located a few micrometers apart and spatially overlapping with the tuned mode. For different pairs of modes we observe either frequency crossing or anti-crossing behaviours. This provides the experimental proof-of-principle that optically isolated regions can be connected, offering new possibilities in the control of light propagation in disordered media.

Original languageEnglish
Title of host publicationProceedings of Frontiers in Optics 2015, FIO 2015
Place of PublicationWashington
PublisherOptical Society of America (OSA)
Number of pages2
ISBN (Electronic)978-1-943580-03-3
Publication statusPublished - 1 Jan 2015
EventFrontiers in Optics 2015, (FIO 2015) - San Jose, United States
Duration: 18 Oct 201522 Oct 2015


ConferenceFrontiers in Optics 2015, (FIO 2015)
Abbreviated titleFIO2015
CountryUnited States
CitySan Jose

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