News & Events

We realized a device that modulates the signal in the C-band and generates the second harmonic, obtaining a signal in the visible with double extinction ratio.

We proudly contributed to an in-depth and comprehensive overview on where the field of photonic metasurfaces is advancing.

Nonlinearity is essential for neural networks but extremely challenging to implement with light. Here, we demonstrate how a nonlinear disordered material can enhance the performance of state-of-the-art photonic neuromorphic computing.

Adding a new dimension to the bottom-up fabrication of second-harmonic photonic crystals.

We are excited to share our latest publication in the field of integrated quantum photonics.

Check out our paper here: http://arxiv.org/abs/2404.09787

In her course "Nanomaterials for Photonics", Prof. Rachel Grange trains her students to become the engineers & scientists of tomorrow.

The performance of integrated optical spectrometers used to suffer from a trade-off between available bandwidth and achievable resolution: not any more!

We build an experimentally verified graph model for integrated waveguide networks, providing a platform for investigating multiple scattering of light with tailored disorder.

A single waveguide converts and broadens light into the near-ultraviolet spectrum

We present our new article on "Barium Titanate Nanostructures and Thin Films for Photonics", which is part of the Advanced Optical Materials Hall of Fame article series. We review the progress in various applications based on barium titanate nanostructures and thin films for photonics and forsee future technologies that may benefit from this material platform in the near future.

We have managed to make an efficient material for broadband frequency doubling of light using microspheres made of disordered nanocrystals.  

The first peer-mentoring programme for female first semester Bachelor students started with a welcoming-apéro organized by Viola Vogler-Neuling from the ONG group last week. Prof. Rachel Grange joined to welcome the students as she is currently teaching the Physics 1 lecture and was strongly supporting the programme.

Solution-processed barium titanate nonlinear woodpile photonic structures with large surface areas – Issue 5, 2020

Prof. Dr. Rachel Grange is teaching the Physics I lectures in autumn semester 2020.

Switchable Photonic Metasurfaces: Electro‐Optic Metasurfaces Based on Barium Titanate Nanoparticle Films - Issue 17, 2020.

See us online at Metanano!

The ONG member Marc Reig Escalé has been awarded with an ETH Pioneer Fellowship, where the commercialization of photonic integrated circuits for telecommunications will take place. Congratulations!  

See us online at EOSAM!

We demonstrated a method to control and redirect the directionality of  second‐harmonic generation emission by engineering the geometry and position of rod nanoantennas, fabricated from sliced III-V semiconductor nanowires. We built a phase array of rod nanoantennas to tailor nonlinear optical response by adjusting their length and position to achieve a targeted phase difference.

A novel concept of electro‐optic switching is introduced by A. Karvounis et. al. We employ an adjacent BaTiO₃ nanoparticle film to a plasmonic metasurface to electrically control the optical reflection of a photonic metasurface dynamically. Nanoparticle films are deposited on large scale and great uniformity, while maintain optical nonlinear properties such as SHG.

Check out our posters at the virtual poster session of POM 2020 on 22nd of June!

Check out the outstanding invited speakers and register today! (it's free!!)

Three dimensional nonlinear photonic crystals are well known candidates for a wide variety of optical applications, but notoriously hard to fabricate in large scale. V. V. Vogler-Neuling et al. combined a bottom-up fabrication technique with barium titanate nanoparticles to achieve large area photonic crystals with up to eight layers.

More than 1000 researchers gathered online for the inaugural Photonics Online Meetup (POM, https://sites.usc.edu/pom/) on January 13th 2020. They simultaneously attend the five hours conference either alone from their personal computer or at their university from hubs distributed across five continents and many time zones.

About a thousand researchers worldwide participated in the Photonics Online Meetup POM20.

In collaboration with researchers from Australian National University, G. Saerens and M. Timofeeva demonstrated new types of GaAs nanoantennas with special nonlinear tensorial properties of material, that allows to switch the SHG emission directionality for forward to backward and back only by rotating the polarization of the incident light.

EU Grant access wrote a science story about our projects financed by the European Union.