118 citations · 239 across the 9 of their papers we have counts for
9 papers
Electric Field Resolved Image Formation in a Widefield Optical Microscope
Arjun Ashoka, Juhwan Lim, Akshay Rao +1
Visualizing the spatiotemporal evolution of the electric field of light is fundamental to optics, from designing photonic devices to developing next-generation microscopes. However…
Fieldoscopy at the Quantum Limit
Dmitry A. Zimin, Arjun Ashoka, Florentin Reiter +1
We demonstrate a novel concept for measuring time-varying electric field transients of petahertz-scale photons down to a single-photon regime. We observe a clear transition from cl…
Room Temperature Optically and Magnetically Active Edges in Phosphorene Nanoribbons
Arjun Ashoka, Adam J. Clancy, Naitik A. Panjwani +20
Nanoribbons - nanometer wide strips of a two-dimensional material - are a unique system in condensed matter physics. They combine the exotic electronic structures of low-dimensiona…
Local Symmetry Breaking Drives Picosecond Spin Domain Formation in Polycrystalline Semiconducting Films
Arjun Ashoka, Satyawan Nagane, Nives Strkalj +6
Photoinduced spin-charge interconversion in semiconductors with spin-orbit coupling could provide a route to optically addressable spintronics without the use of external magnetic…
Thermodynamic Limits of Photon-Multiplier Luminescent Solar Concentrators
Tomi K Baikie, Arjun Ashoka, Akshay Rao +1
Luminescent solar concentrators (LSCs) are theoretically able to concentrate both direct and diffuse solar radiation with extremely high efficiencies. Photon-multiplier luminescent…
Tuning the coherent propagation of organic exciton-polaritons through dark state delocalization
Raj Pandya, Arjun Ashoka, Kyriacos Georgiou +7
While there have been numerous reports of long-range polariton transport at room-temperature in organic cavities, the spatio-temporal evolution of the propagation is scarcely repor…
Direct Observation of Ultrafast Singlet Exciton Fission in Three Dimensions
Arjun Ashoka, Nicolas Gauriot, Aswathy V. Girija +7
We present quantitative ultrafast interferometric pump-probe microscopy capable of tracking of photoexcitations with sub 10 nm spatial precision in three dimensions with 15 fs temp…
Extracting Quantitative Dielectric Properties from Pump-Probe Spectroscopy
Arjun Ashoka, Ronnie R. Tamming, Aswathy V. Girija +12
Optical pump-probe spectroscopy is a powerful tool for the study of non-equilibrium electronic dynamics and finds wide applications across a range of fields, from physics and chemi…
Unexpected Effectiveness of Berezinskii-Kosterlitz-Thouless Description of Electron Paramagnetic Resonance Linewidth Behaviour in the 3-Dimensional Manganite BiSrMnCrO
A. Ashoka, K. S. Bhagyashree, S. V. Bhat
We find that the temperature dependence of the Electron Paramagnetic Resonance (EPR) linewidth observed in BiSrMnCrO (BSMCO), as well as in cert…