513 citations · 1.6k across the 24 of their papers we have counts for
24 papers
A simple metamaterial absorber associated with Fano-like resonance
Raghwendra Kumar, S. Anantha Ramakrishna
A simple metamaterial absorber suitable for fabrication over large areas associated with a Fano like resonance is proposed. The proposed designed of the metamaterial absorber consi…
Resonant enhancement of Raman scattering in metamaterials with hybrid electromagnetic and plasmonic resonances
Sriram Guddala, Narayanarao Desai, S. Anantha Ramakrishna
A tri-layer metamaterial perfect absorber of light, consisting of (Al/ZnS/Al) films with the top aluminium layer patterned as an array of circular disk nanoantennas, is investigate…
Thermally Induced Nonlinear Optical Absorption in Metamaterial Perfect Absorbers
Sriram Guddala, Raghwendra Kumar, S. Anantha Ramakrishna
A metamaterial perfect absorber consisting of a tri-layer (Al/ZnS/Al) metal-dielectric-metal system with top aluminium nano-disks is fabricated by laser-interference lithography an…
Anisotropic Metamaterial Optical Fibers
Dheeraj Pratap, S. Anantha Ramakrishna, Justin G. Pollock +1
Internal physical structure can drastically modify the properties of waveguides: photonic crystal fibers are able to confine light inside a hollow air core by Bragg scattering from…
Asymmetric coupling and dispersion of surface-plasmon-polariton waves on a periodically patterned anisotropic metal film
Jhuma Dutta, S. Anantha Ramakrishna, Akhlesh Lakhtakia
The morphology of a columnar thin film (CTF) of silver renders it an effectively biaxially anisotropic continuum. CTFs of silver deposited on one-dimensional gratings of photoresis…
Enhanced propagation of photon density waves in random amplifying media
Lalruatfela Renthlei, Harshawardhan Wanare, S. A. Ramakrishna
We demonstrate enhanced wave-like character of diffuse photon density waves (DPDW) in an amplifying random medium. The amplifying nature makes it contingent to choose the wave solu…