Photonic Terahertz Systems

Confirmada

Terahertz technology is key to solving the massive bandwidth challenges needed for high capacity wireless data transmission. As the number of wireless connected devices (Internet of Things) grows exponentially, THz technology will become increasingly important in society. THz waves are non-ionizing (unlike X-rays), non-invasive and therefore are ideally  suited for biomedical analysis, quality control of pharmaceutical  products and food security. Furthermore, THz waves have a low  penetration depth into many materials.

Idelfonso Tafur Monroy

EINDHOVEN  UNIVERSITY OF  TECHNOLOGY

Construction of a Non-Linear Ellipsometer;an experimental Approach to Non-Linear Spectroscopy

Ponencia Confirmada

In this talk we proposed the characterization of the non-linear optical properties of solids using an experimental setup similar to a linear ellipsometer. Using an Electrically Focus Tunable Lens (EFTL) and a pair of integrating spheres, we were able to measure the nonlinear absorption (in transmission) and nonlinear refraction (in reflection) in a long range of wavelengths (690-1040 nm).
To demonstrate the technique, we used two typical semiconductor materials ZnSe and CdS, which had been well characterized in the past and are used as a reference for the calibration of the system. more...

HERNANDO GARCÍA

Caracterización óptica y de las propiedades de transporte de nanoestructuras ZnO embebidas en una matriz de SiO₂ y su aplicación en la fabricación de un prototipo de sensor óptico.

Ponencia Confirmada

El estudio de los semiconductores tiene un amplio potencial de aplicación en temas de gran actualidad para el desarrollo de la humanidad. Específicamente, en el tema de cambio climático, el estudio de nanoestructuras semiconductoras con las propiedades adecuadas para tomar parte en el proceso de fotosíntesis artificial ha suscitado un gran interés. mas...

MIGUEL MELÉNDEZ LIRA

DEPARTAMENTO DE FÍSICA DEL CINVESTAV-IPN

Ponencia Confirmada

Near-infrared (NIR) imaging devices have attracted considerable research interest due to potential applications in different areas such as night visions, biological imaging, telemetry and security [1]. All organic up-converter devices are enabling to do high resolution imaging in the near-infrared and have low manufacture costs associate in comparison of other inorganic and hybrid inorganic-organic up-converter devices.
The Organic Optical Up-converter Device (OUD) consists in a tandem structure with NIR sensitive organic photodetector (PD) stacked in an efficient visible Organic Light Emitting Diode (OLED). In the dark, holes are blocked at the anode, no hole current is flowing, and the device is in the off-state. When NIR light is absorbed by the PD, electron-hole pairs are formed. Under the appropriate bias, holes are driven into the OLED where they recombine with electrons injected from the cathode, thus leading to light emission.more...

MARCO CREMONA

PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO

Ponencia Confirmada

Optical phase-change materials (O-PCMs) enable the sought-after nonvolatile reconfiguration in photonic devices – those able to switch between configurations and retain any with no power consumption, thus representing a new paradigm for photonics. This is possible given the large refractive index modulation when switching between the stable amorphous and the crystalline solid-state phases of, for instance, Ge-Sb-Se-Te chalcogenide alloys. In recent years, these materials were employed in proof-of-concept devices for diverse optical applications, namely bistable displays, photonic neuromorphic computing devices, reconfigurable metasurfaces, tunable polaritonics and plasmonics, among others. more...

CARLOS RÍOS

MIT