Past Events

Seminar Announcement: Jean-Luc Adam

posted by Stefano Varas   [ updated ]

Thursday, 24 May 2018, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

"Chalcogenide glasses: optical properties and photonic devices"

Jean-Luc Adam
Institut des Sciences Chimiques de Rennes UMR CNRS 6226
Université de Rennes 1

Vitreous materials based on chalcogen elements show large transparency that extends from the visible up to 15 µm in the infrared. This is due to the lower phonon energies of chalcogenides, which are also responsible for enhanced luminescence of rare-earth (RE) ions in these matrices. In addition, chalcogenide glasses contain large polarizable atoms and external lone electron pairs which induce exceptional non-linear properties as compared to oxide glasses.
As far as shaping is concerned, specific chalcogenide glass compositions can be obtained in the form of optical lenses by molding; they can be also drawn in optical fibers or deposited as thin films and planar waveguides.
Applications are directly related to these unique optical properties and shaping abilities. For example, chalcogenide lenses are implemented in cameras for infrared imaging, and fibers are well adapted for optical sensing of biomolecules. Chalcogenide glasses doped with RE ions possess a high potential for applications as infrared sources. Besides, small-core photonic crystal fibers are capable to enhance non-linear optical properties for the generation of supercontinuum in the infrared.

Giorno Internazionale della Fotonica 26-27 maggio

posted May 15, 2018, 12:49 AM by Stefano Varas   [ updated May 17, 2018, 8:49 AM ]

CNR-IFN Trento celebrerà il giorno internazionale della luce partecipando all'evento "Siamo Europa" i giorni 26 e 27 maggio, dove verranno illustrati alla comunità i progetti di outreach “PHABLABS 4.0” e "Esploratori della Fotonica" che mirano a sensibilizzare, diffondere e creare curiosità nel mondo della Fotonica.

9 maggio 2018 - Attività di Outreach “PhabLab4.0”

posted May 10, 2018, 2:44 AM by Stefano Varas   [ updated May 14, 2018, 12:43 AM ]

Si è svolta ieri, presso il MuSe, la prima edizione del “Photonic Challenge” nell’ambito del progetto Europeo PhabLab4.0 che vede coinvolto l’Istituto di Fotonica e Nanotecnologie sez. Trento.

SPIE Photonics Europe 2018

posted May 10, 2018, 2:31 AM by Stefano Varas

Fiber Lasers and Glass Photonics: Materials through Applications
held in Strasbourg, France
22 - 26 April 2018

2018 Call for Papers is now open

Present your research at the only cross-disciplinary optics and photonics event covering the most significant photonics technologies—from digital optics to quantum technologies to attosecond science. Look for new topics in 2018, including 3D printed optics, photonic glasses, optical biopolymers, and unconventional optical imaging.

More detailed information can be found on the webpage:

Roberta Ramponi President of the ICO

posted Feb 28, 2018, 3:49 AM by Stefano Varas   [ updated Feb 28, 2018, 3:50 AM ]

We are pleased to congratulate with our Director Roberta Ramponi, who has been elected President of the International Commission for Optics (ICO).

Ramponi ICO.pdf

Attività di Outreach “Esploratori della Fotonica”

posted Feb 27, 2018, 12:49 AM by Stefano Varas   [ updated Feb 27, 2018, 12:49 AM ]

Il giorno 6 marzo, nell’ambito del progetto "Esploratori della Fotonica", iniziativa realizzata con il contributo della Fondazione Caritro, coordinata dall’Istituito di Fotonica e Nanotecnologie (IFN) del CNR, in collaborazione con la Fondazione Bruno Kessler, si terrà il primo seminario tematico per gli studenti degli Istituti Liceo Scientifico "Galileo Galilei" di Trento, Liceo Scientifico "Da Vinci" di Trento, Istituto di Istruzione "A. Degasperi" di Borgo Valsugana ed Liceo "Antonio Rosmini" di Rovereto.

Seguiranno visite programmate ai laboratori di IFN e FBK che consentiranno agli studenti di approfondire concetti teorici e confrontarsi con le tecnologie impiegate nel mondo della ricerca.

Maggiori informazioni si possono trovare sul sito del progetto:

Seminar Announcement: Sergey Krasikov

posted Feb 6, 2018, 4:01 AM by Stefano Varas   [ updated Feb 6, 2018, 4:01 AM ]

Tuesday, 6 February 2018, 11:00
Sala Grande Palazzina B via alla Cascata 56/C

"Use of the polymeric theory for the description of physical and chemical properties of the liquid glass SnO-SiO2"

Sergey Krasikov
Institute of Metallurgy of Ural Branch of the Russian Academy of Sciences

Discussion of experimental data from positions of the polymeric theory of the melted silicates offered by O. A. Yesin is executed. One of its basic provisions is that oxide silicate melts consist of the linear and branched anion chains of various length which are in dynamic balance. It assumes balance between "free" ions" (O2-), one (O-) and two- coherent (O0) anions. According to the polymeric theory was the sizes of structural units and size of a surface tension and viscosity of liquid systems SnO-SiO2, SnO-SiO2-CaO, by SnO-SiO2-FeO are calculated. Results of calculations showed a satisfactory consent of settlement and skilled sizes. Thus, the polymeric model of silicate melts offered by O. A. Yesin is very perspective for the description of physical and chemical properties of stanniferous oxide melts.


posted Jan 29, 2018, 12:10 AM by Stefano Varas

6th International Conference on Photonics, Optics and Laser Technology
held in Funchal, Madeira - Portugal
25-27 January, 2018

Optical systems are ubiquitous in modern society, from medical sciences to space exploration, telecommunications, information processing and numerous industrial and military applications of all kinds.
This 6th edition of PHOTOPTICS will feature 3 different tracks on Optics, Photonics and Lasers, covering both theoretical and practical aspects. Researchers, engineers and practitioners interested in any of these fields are welcome to join us in Funchal, Madeira and present their work on new methods or technologies, advanced prototypes, systems, tools and techniques, as well as general survey papers indicating future directions.

More detailed information can be found on the webpage:

Seminar Announcement: Marco Cremona

posted Dec 19, 2017, 11:51 PM by Stefano Varas   [ updated Dec 21, 2017, 1:20 AM ]

Tuesday, 19 December 2017, 11:00
Sala Grande Palazzina B via alla Cascata 56/C

"Organic lanthanides complexes for NIR OLEDs and magnetoresistance investigation"

Marco Cremona
Departamento de Física, PUC-Rio, Rua Marques S. Vicente, 225, 22453-900
Rio de Janeiro, RJ Brasile

The complexes of f-elements, particularly near-infrared (NIR) emitters are gaining much attention for their potential applications in optical communications, optoelectronic devices and biomedical diagnostic application. The emission from their complexes can be properly utilised in the form of OLEDs. In our laboratories Nd, Yb and Er complexes based on the various fluorinated/non-fluorinated β-diketones and O-donor neutral ligands were synthesised and fully characterised. OLEDs were fabricated and investigated using these complexes as emitting layers along with other organic layers. Moreover, a family of rare-earth quinolinate based complexes, namely tetrakis 8-hydroxyquinolinate (M[RE(q)4], with M=countercation), were used as active layers in the investigation of the spin-orbit coupling in organic magnetoresistance (OMAR) effect. Our measurements in these devices discovered a new feature in the OMAR curves evidencing the influence of the spin-orbit coupling mechanism on charge transport. These results and others will be presented and discussed in this talk.

Seminar Announcement: Tatsuya Mori

posted Dec 7, 2017, 12:00 AM by Stefano Varas   [ updated Dec 21, 2017, 1:19 AM ]

Wednesday, 6 December 2017, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

"Boson peak investigation of glassy materials by terahertz time-domain spectroscopy"

Tatsuya Mori
Division of Materials Science Faculty of Pure and Applied Sciences
University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8573, Japan

The boson peak (BP) has been one of the unsolved problems on glass physics, and it appears in the THz region as a universal excitation. The BP is famously detected by inelastic neutron or X-ray scattering, low-frequency Raman scattering, and low-temperature specific heat measurements. On the other hand, there have been few experimental investigations by far-infrared spectroscopy, although the technique is complemental method of Raman spectroscopy.
Recently, we showed that THz time-domain spectroscopy is suitable technique for the detection of the BP [M. Kabeya, T.M. et al., Phys. Rev. B 2016]. One of the advantages of the THz spectroscopy is the ability to determine the absolute value of the infrared light-vibration coupling coefficient (CIR).
In this lecture, we evaluate the CIR of the glassy glucose using Taraskin’s universal model [S. N. Taraskin et al., Phys. Rev. Lett. 2006]. We will see that the large absorption in the vicinity of the BP of the glassy glucose is caused by both the “light mass” effect and the disordered charge distribution.

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