1 citations · 1 across the 4 of their papers we have counts for
6 papers
Vertical microcavities with optical Kerr materials
Riya Varghese, Ali Panahpour, Marco Ornigotti +1
Optical Kerr nonlinearity is central to optical bistability in high-Q microcavities. Here, we show that optical Kerr nonlinearities in Fabry Perot resonators can also result in sel…
Active control of phase matching in nonlinear metasurfaces using Pancharatnam--Berry phase
Madona Mekhael, Roman Calpe, Tommi K. Hakala +2
Reconfiguring the spectral output of nonlinear metasurfaces after fabrication remains challenging. We address this by exploiting the nonlinear Pancharatnam--Berry phase of …
Photonic Doping of Epsilon-Near-Zero Bragg Microcavities
Ali Panahpour, Jussi Kelavuori, Mikko Huttunen
Epsilon-near-zero (ENZ) photonics provides a powerful route to extreme dispersion engineering, strong field confinement, and unconventional wave phenomena. A closely related concep…
Nonlinear Optical Microscopy of Semiconductor Metal-Nanocavities
Riya Varghese, Shambhavee Annurakshita, Yaraslau Tamashevich +13
We use second and third harmonic generation microscopy to investigate the nonlinear optical response of GaAs nanocavities embedded in a gold film and compare them to bare GaAs nano…
Dispersion-induced -factor enhancement in waveguide-coupled surface lattice resonances
Jussi Kelavuori, Ali Panahpour, Mikko J. Huttunen
Diffractively coupled nanoparticle arrays are promising candidates for helping to flatten many photonic devices such as lasers, lenses, and metrology instruments. Their performance…
Purcell Effect in Epsilon-Near-Zero Microcavities
Ali Panahpour, Jussi Kelavuori, Mikko Huttunen
Epsilon-near-zero (ENZ) photonics presents a powerful platform for integrated photonic systems, enabling a range of novel and extraordinary functionalities. However, the practical…