Past Events


posted Sep 16, 2019, 6:43 AM by Stefano Varas

8th International Workshop on Photoluminescence in Rare Earths (PRE'19): Photonic Materials and Devices
4-6 September 2019 | Nice, France

PRE’19 is the eighth event in the series of International Workshops covering a wide range of research topics concerning the properties and applications of rare-earth ions in optoelectronics and photonics. The series begun in Trento, Italy in May 2005 (PRE’05), followed by PRE’07 again in Trento, PRE’10 in Firenze (Italy), PRE’12 in Kyoto (Japan), PRE’14 in San Sebastián (Spain), PRE’16 in Greenville (USA) and PRE'17 in Roma (Italy).

The Photoluminscence in Rare Earths: Photonic Materials and Devices (PRE) workshop aims to provide a global forum for material scientists, chemists and physicists to discuss and debate the state of the art and future perspectives of rare earth based materials for optoelectronic and photonic applications. Both fundamental photoluminescent materials, properties, and applications are considered.

More than 700 scientists and students from more than 30 countries, in total, have attended the previous Workshops. The average size of each event, around 100 people, makes for a collegial environment where students and world experts can mingle and talk in an informal and effective way.

You are cordially invited to participate in PRE'19 to be held on 4-6 September 2019 in Nice, France. We welcome you to submit your most recent findings and join the community of scholars advancing the field of light emission based on rare-earth doped materials.

Looking forward to meeting you in the French Riviera !

Wilfried Blanc, Pieter Dorenbos, Fiorenzo Vetrone
PRE'19 Co-chairs

Giancarlo C. Righini
PRE'19 Honorary chair

Seminar Announcement: Guglielmo Macrelli

posted Aug 9, 2019, 12:39 AM by Stefano Varas

Tuesday, 6 August 2019, 10:30
Sala Grande Palazzina B via alla Cascata 56/C

"Strengthened glass by Ion Exchange: Residual stress profile nagging issues"

Guglielmo Macrelli
Isoclima SpA R&D Dept.,
Este (PD),

Strengthened glass by ion exchange is a wide studied topic with remarkable applications for transportation, pharmaceuticals, architectural and consumer electronics. Despite the increased production, there are still some nagging issues to be fully resolved. One of the major anomalies, that the observed surface compression magnitude is a factor of 3 to 5 lower than that predicted by Cooper coefficient, was recently explained by Varshneya et. al. (2015). A second anomaly which remains a nagging issue is the ob servation that the maximum surface compression observed is often sub surface. Some Li2O MgO Al2O3 SiO2 glasses after ion exchange exhibit conversion of the surface compression to tension over a period of time followed by a buried inner compression, changin g to the usual central tension (Donald & Hill 1988). Donald & Hill ascribed this to a large differential thermal contraction of surface layers upon cooling. Varshneya’s students refuted this by showing that the relaxation occurred even at temperature of io n exchange. We propose a new explanation. Our approach is based on the calculation of residual stress profile taking into account relaxation effects incorporating fast beta, slow alpha and structural relaxations. We show that a mathematical model of stress build up and relaxation in the ion exchanged glass can be versatile in the prediction of even unusual stress profiles. Correlations between residual stress profile and optical properties (TM and TE refractive index profiles) will be also shortly discussed.

Seminar Announcement: Lora Ramunno

posted Aug 4, 2019, 1:41 AM by Stefano Varas   [ updated Aug 4, 2019, 1:41 AM ]

Friday, 2 August 2019, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

"Modeling complex nanophotonics systems : from large scale simulations to machine learning"

Lora Ramunno
Department of Physics,
University of Ottawa,
Ottawa, ON K1N 6N5,

Numerical modelling provides an important tool for understanding light matter interaction in complex nanoscale systems. Simulations bring insight to experimental results by allowing one tease out the most relevant underlying phenomena in very complex scenarios. In this talk, I will focus on one example, relating to the creation of beautiful colors and artwork on metal surfaces via a laser writing process that creates very complex and random nanostructured surfaces. Our computations were able to identify that plasmonic effects were key to colour creation, and allowed us to detangle what features on the complex surface were respon sible for the generation of particular colours . Furthermore, using the experimental and simulation data generated from this work, we use machine learning to predict new colours, though an iterative inverse design algorithm that we developed.

Seminar Announcement: Tindaro Ioppolo

posted Aug 2, 2019, 1:19 AM by Stefano Varas   [ updated Aug 4, 2019, 1:42 AM ]

Thursday, 1 August 2019, 10:30
Sala Grande Palazzina B via alla Cascata 56/C

"Effect of acceleration and angular velocity on the morphology-dependent optical resonances of spherical resonators"

Tindaro Ioppolo
College of Engineering and Computing Sciences,
New York Institute of Technology,
Harry Schure Hall,
Old Westbury, NY 11568 8000

An analysis is presented to estimate the perturbation of morphology dependent optical resonances (MDRs) of spherical dielectric cavities due to acceleration and angular velocity. In the model, the optical cavity is attached to a rigid base that is accelerating. Hertz contact theory is used to describe the contact surface between the base and the sphere, and the Navier equation is solved to obtain an expressio n for MDR shift dependence on the base acceleration. The analysis is also extended to a rotating resonator. E xperiment s are also carried out using a polydimethylsiloxane sphere as the optical cavity. The predictions using the analysis agree well with the e xperimental results.

CLEO/Europe-EQEC 2019

posted Jul 9, 2019, 1:45 AM by Stefano Varas

CLEO/Europe-EQEC 2019
23 – 27 June 2019 | Munich, Germany

International conference to highlight new frontiers in lasers, photonics and optical science across a wide range of technical areas.

The CLEO®/Europe-EQEC conference series has a strong tradition as a comprehensive and prestigious gathering of optics and photonics researchers and engineers in Europe.

With technical co-sponsorship provided by the European Physical Society (EPS), the IEEE Photonics Society (IPS) and the Optical Society (OSA), CLEO®/Europe reflects a strong international presence in the complementary research traditions of laser science, photonics and quantum electronics.

More specifically, CLEO®/Europe emphasizes applied physics, optical engineering and applications of photonics and laser technology whereas EQEC emphasizes basic research in laser physics, nonlinear optics and quantum optics.

CLEO®/Europe will showcase the latest developments in a wide range of laser and photonics areas including laser source development, materials, ultrafast science, fibre optics, nonlinear optics, terahertz sources, high-field physics, optical telecommunications, nanophotonics, biophotonics.

EQEC will feature the fundamentals of quantum optics, quantum information, atom optics, ultrafast optics, nonlinear phenomena and self-organization, plasmonics and metamaterials, fundamental nanooptics, theoretical and computational photonics.

This combination provides a unique forum to obtain informative overviews and discuss recent advances in a wide spectrum of topics, from fundamental light-matter interactions and new sources of coherent light to technology development, system engineering and applications in industry and applied science.

CLEO®/Europe-EQEC 2019 conference is Europe’s largest conference on photonics and related research fields. The program features plenary lectures by Michal Lipson from Columbia University on Silicon Photonics, and by Anton Zeilinger from the Austrian Academy of Sciences on Entanglement. The overall program is considerably larger than in previous years, with 8 keynote and 6 tutorial speakers, and over 80 invited talks within the different topics. Furthermore, the conference will feature 12 short courses, more joint symposia fostering interdisciplinarity and interaction with other fields In 2019 new lecture halls will be made available, improving conditions for oral sessions and allowing for more comprehensive poster session program.

Coinciding with the 50-year anniversary of integrated optics, the CLEO®/Europe-EQEC 2019 conference will feature a special joint symposium on this topic with a tutorial presentation by John Bowers from UC Santa Barbara. Highlighting young talent, the 2019 Young Scientist Prize (YSP) will be awarded at the conference.

PIERS 2019

posted Jul 9, 2019, 1:43 AM by Stefano Varas

PhotonIcs & Electromagnetics Research Symposium
also known as Progress In Electromagnetics Research Symposium
17-20 June 2019 | Rome, Italy

PIERS2019 Rome Focus/Special Sessions
SC3: Glass Photonics: Novel Systems and Ongoing Applications
Organized by Dr. Anna Łukowiak (Institute of Low Temperature and Structure Research, PAS) and
Dr. Maurizio Ferrari (IFN-CNR CSMFO Lab.)

Session's Information:
Glass Photonics represents the technological pillar of a huge number of photonic applications covering Health and Biology, Structural Engineering, Environment Monitoring Systems, Lighting, Laser sources or Quantum Technologies. The aim of the session “Glass Photonics: Novel Systems and Ongoing Applications” is to have a broad spectrum of robust presentations highlighting the novel outcomes of Glass Photonics in the aforementioned scientific and technological areas. What is expected is to promote the optimal conditions for a multidisciplinary and synergic event where glass-based photonic systems, materials, structures, and devices are discussed. We await for communications looking at Glass Photonics ongoing applications and immediate and long-term solutions that are considered necessary for the society wellness. Research concerning but not limited to fibers, integrated systems, waveguides, resonators, nanostructures, glass-ceramics, colloids, functionalized glasses, luminescent structures, up-down converters, light sources, and photons management are welcome in this session.

Giornata Internazionale della Luce

posted May 21, 2019, 12:08 AM by Stefano Varas   [ updated May 21, 2019, 2:19 AM ]

Sala Grande FBK, Via Santa Croce 77, Trento
dalle ore 8:45 alle ore 13:15

La luce è vita e come tale plasma le nostre vite e la nostra storia. Cinque scienziati provenienti da differenti aree del sapere e della società civile discuteranno su:

  • Il vetro, la sfera e la luce: dalla lente al microlaser
  • Luce e orticoltura
  • La luce al servizio della medicina: i biosensori ottici
  • Luce - Ricerca e tradizione culturale
  • Luce e ontologia: visione artificiale e metodo geometrico

Presentazioni IDL2019

   Open Presentazioni IDL2019 in Google Drive

Giornata Internazionale della Luce 2019, Photo Gallery

Grande finale del progetto europeo “Phablab 4.0”

posted Apr 10, 2019, 3:19 AM by Stefano Varas   [ updated Apr 16, 2019, 5:54 AM ]

Si è tenuto ieri presso il MuSe l’evento finale del progetto europeo Phablab 4.0, svolto in collaborazione con tra CNR-IFN ed il Muse FabLab che ha visto sfidarsi 7 progetti candidati alla Photonics Challenge 2019.

Quattro i criteri di valutazione: Originalità, Tecnologia, Design, Comunicazione. A fare da controcanto alle scelte dei giudici la giuria popolare che, al termine delle presentazioni, potrà confermare il giudizio dei giudici o ribaltarne il risultato, eleggendo il candidato più comunicativo.

Il premio della giuria è stato assegnato al progetto M&L Pocket presentato da Pietro Degapseri.

Photonics Challenge 2019, Photo Gallery

Lam Thi Ngoc Tran - Doctorate in Civil, Environmental and Mechanical Engineering 2019

posted Apr 9, 2019, 6:55 AM by Stefano Varas   [ updated Apr 9, 2019, 6:57 AM ]

We are pleased to congratulate with our colleague Dr. Lam Thi Ngoc Tran on successfully obtaining her PhD degree in Civil, Environmental and Mechanical Engineering with the qualification "Excellent cum Laude"

Photos: Lam Thi Ngoc Tran - PhD degree in Civil, Environmental and Mechanical Engineering 09-04-2019

Seminar Announcement: Ambra Giannetti

posted Apr 5, 2019, 3:48 AM by Stefano Varas   [ updated Apr 5, 2019, 3:48 AM ]

Thursday, 4 April 2019, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

"Label-based and Label-free Optical Biosensors"

Ambra Giannetti
Via Madonna del Piano 10,
50019 Sesto Fiorentino (FI),

The field of bio-sensors, ranging from biomedical/clinical applications to environmental applications and food analyses, has attracted a great attention since the past two decades. In fact, in all of these fields, there is a growing demand for rapid responses, quality control, usable devices, low-cost analyses, etc. All these features could lead to an improved healthy life, ranging from a more reliable and controlled quality of food and environment to a faster and more specific diagnosis. The optical detection methods used in bio-sensors are based both on label-based or label-free techniques. This seminar will focus on new optical (label-free and label-based) bio-sensor studies developed at the Institute of Applied Phisics – CNR, Florence.

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