108 citations · 176 across the 6 of their papers we have counts for
6 papers
Multi-photon absorption properties of semiconducting nanomaterials
Venkatram Nalla
Multiphoton absorption (MPA) is a nonlinear optical process that involves simultaneous absorption of two or more photons by a material to promote its ground state to an excited sta…
Coherent Plasmonic Absorption in the Femtosecond Regime
Venkatram Nalla, Xu Fang, João Valente +2
Dissipation of electromagnetic energy through absorption is a fundamental process that underpins phenomena ranging from photovoltaics to photography, analytical spectroscopy, photo…
Spatio-temporal characterization of ultrashort vector pulses
Apostolos Zdagkas, Venkatram Nalla, Nikitas Papasimakis +1
Ultrafast vectorially polarized pulses have found many applications in information and energy transfer owing mainly to the presence of strong longitudinal components and their spac…
Metamaterial enhancement of metal-halide perovskite luminescence
Giorgio Adamo, Harish Krishnamoorthy, Daniele Cortecchia +4
Metal-halide perovskites are rapidly emerging as solution-processable optical materials for light emitting applications. Here we adopt a plasmonic metamaterial approach to enhance…
Fibre-optic metadevice for all-optical signal modulation based on coherent absorption
Angelos Xomalis, Iosif Demirtzioglou, Eric Plum +7
Recently, coherent control of the optical response of thin films of matter in standing waves has attracted considerable attention, ranging from applications in excitation-selective…
Graphene-enhanced, internal-magnetic-field-generated Rabi oscillations in metal-coated Si-SiO2 photoconductive detectors
Venkatram Nalla, Kai Zhang, Kian Ping Loh +1
We report our demonstration of Rabi oscillations in Si-SiO2-Al photoconductive devices with nanosecond laser pulses of a few nJ at room temperature without external magnetic fields…