12 citations · 13 across the 5 of their papers we have counts for
7 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…
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…
All-optical switching via coherent control of plasmon resonances
Rakesh Dhama, Ali Panahpour, Tuomas Pihlava +2
A novel ultrafast all-optical switching mechanism is demonstrated theoretically and experimentally based on a plasmonic analog of the effect of \textit{Enhancement of Index of Refr…
Refraction enhancement in plasmonics by the coherent control of plasmon resonances
Ali Panahpour, Abolfazl Mahmoodpoor, Andrei V. Lavrinenko
A plasmonic nanoantenna probed by a plane-polarized optical field in a medium with no gain materials can show zero absorption or even amplification, while exhibiting maximal polari…