One of the key trade-offs in optics is that the higher the resolution of a spectrometer, the greater the footprint that it needs. However, one class of spectrometers where this relation does not hold are speckle…
Together with Patrick Sebbah from the Bar-Ilan University, we have made an important advancement in the development of tunable random lasers. Random lasers, unconventional optical cavity-based sources, have long been a…
Silicon photonics, the use of light to transmit and process information, has become increasingly popular over the last few years due to its high data transmission rates and compatibility with existing integrated…
One of the exciting application areas for optical metasurfaces is holography. Through a clever arrangement of meta-atoms we use metasurfaces to display almost any computer-generated hologram, allowing the display of…
Epsilon-near-zero (ENZ) materials are materials that have a spectral region where the permittivity is below zero. This leads to unconventional optical behaviour, ranging from light propagation through arbitrary…
Electromagnetically induced transparency (EIT) uses an optical control beam to induce a narrow transparency window in a normally opaque medium. This narrow transparency window is associated with a strong slow light…
As part of the nanofab spin-off from the Photonics online meetup (POM) Dr Schulz gave a short tutorial on how to make a good plasmonic metasurface. The recorded presentation is now available as part of the “Flash Talk”…
The time-bandwidth relation that states that the longer a resonator stores energy, the narrower the bandwidth of supported frequencies and it is an intrinsic limitation to conventional resonators. However, this…
Photonic crystal devices have big potential for nonlinear optics, as they can confine light both spatially and temporally. However, a large number of nonlinear optical processes can occur in these systems, making it…
Metasurfaces based on epsilon-near-zero materials show very strong nonlinear responses and allow coupling of light to optical modes in the epsilon-near-zero thin film that are otherwise not accessible at normal…