TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices
TOM 7 - Thermal radiation and energy management
TOM 8 - Nonlinear and Quantum Optics
TOM 9 - Optics at Nanoscale (ONS)
TOM 10 - Optical Microsystems (OMS)
TOM 11 - Waves in Complex Photonic Media
TOM 12 - Optofluidics
TOM 13 - Ultrafast Optical Technologies and Applications
TOM 14 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session organised by SIOF
Grand Challenges of Photonics Session
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TOM11 S02: Waves in Complex Photonic Media: Novel Concepts I
10:15 - 11:45
Session Chair: Vito Mocella, CNR, Italy
Location:Aula 11 1,5 Floor
10:15 - 10:45 Invited ID: 522 / TOM11 S02: 1 TOM 11 Waves in Complex Photonic Media
Large-scale computation light absorption and generation in disordered semiconductor alloys
Ecole Polytechnique, France
In modern nitride-based devices, the compositional disorder induces large spatial fluctuations of the conduction and valence bands, and strong localization of the quantum states at the nanoscale. Computing absorption and emission properties requires solving the Schrödinger equation for electrons and holes, a daunting task in realistic 3D structures. We present here a novel tool based on the localization landscape theory which provides a new understanding on the distribution of localized states in phase space...
10:45 - 11:15 Invited ID: 476 / TOM11 S02: 2 TOM 11 Waves in Complex Photonic Media
Information entropy of light in disordered systems
National Research Council, Italy
Propagation of light in disordered systems is traditionally based on the study of the statistical properties of energy-related quantities, such as the transmission, reflection, absorption and emission. Driven by the growing array of applications looking at light as a vector of information and long-term data storage, we present a novel approach to the study of mesoscopic physics of light in disordered potentials, based on information theory.
11:15 - 11:30 ID: 486 / TOM11 S02: 3 TOM 11 Waves in Complex Photonic Media
Probing intensity correlations inside a scattering medium
Lorenzo Pattelli1,2, Marco Leonetti3,4, Simone De Panfilis3, Diederik S. Wiersma1,2,5, Giancarlo Ruocco3,6
1Istituto Nazionale di Ricerca Metrologica (INRiM), Italy; 2European Laboratory for Non-linear Spectroscopy (LENS), Italy; 3Center for Life Nano Science @ Sapienza, Istituto Italiano di Tecnologia (IIT), Italy; 4Institute of Nanotechnology, CNR-NANOTEC, Roma, Italy; 5Dipartimento di Fisica, Università di Firenze, Italy; 6Dipartimento di Fisica, Università "La Sapienza", Italy
Speckle patterns generated by wave scattering are typically endowed with several universal properties. Inside a scattering medium, however, non-universal properties arise that depend on the microscopic material details and are still largely unexplored to date both experimentally and numerically due to physical inaccessibility and computational limitations. Here, we present a first experimental investigation of spatial intensity correlations measured inside a scattering medium. A reduction of the available degrees of freedom for the electromagnetic field is observed, as confirmed by large-scale numerical calculations showing a sub-wavelength shrinkage of short-range intensity correlations.
11:30 - 11:45 ID: 488 / TOM11 S02: 4 TOM 11 Waves in Complex Photonic Media
Spectral sampling with random laser modes
Alice Boschetti1, Andrea Taschin2, Paolo Bartolini1, Lorenzo Pattelli3, Renato Torre1, Diederik Wiersma1
1Università di Firenze, Italy; 2Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile (ENEA); 3Istituto Nazionale di Ricerca Metrologica (INRiM)
The work we present deals with random lasers, a peculiar class of coherent light sources with very little apparent resemblance to conventional lasers. We propose a novel spectroscopy technique that employs random lasers as the ideal source of illumination, providing the experimental demonstration of the first spectral super-resolved reconstruction of a simple transmission function.
We show that this can be done using a random laser as light source, taking advantage of its intrinsic stochastic emission properties.