38 citations · 140 across the 11 of their papers we have counts for
11 papers
Compact Dynamical Mean-Field Theory of Oscillator Networks
Kanishka Reddy
We present a compact dynamical mean-field theory (DMFT) for large networks of coupled phase oscillators whose phases live on the circle and interact with both coherent mean-f…
Sum frequency generation from touching wires: A transformation optics approach
Shimon Elkabetz, K. Nireekshan Reddy, Y. Sivan
We employ transformation optics to study analytically nonlinear wave mixing from a singular geometry of touching plasmonic wires. We obtain the analytic solution of the near-field…
Optimization of second-harmonic generation from touching plasmonic wires
Shimon Elkabetz, K. Nireekshan Reddy, Parry Y. Chen +2
We employ transformation optics to optimize the generic nonlinear wave interaction of second-harmonic generation from a pair of touching metallic wires. We demonstrate a 10 orders…
Surface second-harmonic from metallic nanoparticle configurations - a transformation optics approach
K. Nireekshan Reddy, Parry Y. Chen, Antonio I. Fernández-Domínguez +1
We study surface second-harmonic generation (SHG) from a singular plasmonic structure consisting of touching metallic wires. We use the technique of transformation optics and relat…
Revisiting the boundary conditions for second-harmonic generation at metal-dielectric interfaces
K. Nireekshan Reddy, Parry Y. Chen, Antonio I. Fernández-Domínguez +1
We study second-harmonic generation (SHG) arising from surface nonlinearity at a metal-dielectric interface using a spectral decomposition method. Since our method avoids the need…
Nonlinear Coherent Perfect Absorption
K. Nireekshan Reddy, S. Dutta Gupta
We review some of the recent concepts and their realization exploiting the perfect destructive interference of light in micro and nano structures. One refers to optical structures…
Cavity controlled spectral singularity
K. Nireekshan Reddy, S. Dutta Gupta
We study theoretically a PT-symmetric saturable balanced gain-loss system in a ring cavity configuration. The saturable gain and loss are modeled by two-level medium with or withou…
Gap solitons with null-scattering
K. Nireekshan Reddy, S. Dutta Gupta
We study excitation of gap solitons under the conditions of coherent perfect absorption (CPA). Our system consists of a symmetric periodic structure with alternating Kerr nonlinear…
A study of PT-symmetric Non-linear Schroedinger Equation
K. Nireekshan Reddy, Subhrajit Modak, Kumar Abhinav +1
Systems governed by the Non-linear Schroedinger Equation (NLSE) with various external PT-symmetric potentials are considered. Exact solutions have been obtained for the same throug…
Light-controlled perfect absorption of light
K. Nireekshan Reddy, S. Dutta Gupta
We study coherent perfect absorption (CPA) of light in a Kerr nonlinear metal-dielectric composite medium, illuminated from the opposite ends. Elementary symmetry considerations re…
Nonlinearity Induced Critical Coupling
K. Nireekshan Reddy, Achanta Venu Gopal, S. Dutta Gupta
We study a critically coupled system (Opt. Lett., \textbf{32}, 1483 (2007)) with a Kerr-nonlinear spacer layer. Nonlinearity is shown to inhibit null-scattering in a critically cou…