Krishnan Thyagarajan

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We study the dynamics of knotted deformable closed chains sedimenting in a viscous fluid. We show experimentally that trefoil and other torus knots often attain a remarkably regular horizontal toroidal structure while sedimenting, with a number of intertwi ...

Significant augmentation of second harmonic generation using Fano resonances in plasmonic heptamers made of silver is theoretically and experimentally demonstrated. The geometry is engineered to simultaneously produce a Fano resonance at the fundamental wa ...

We present a novel plasmonic antenna geometry - the double resonant antenna (DRA) - that is optimized for second-harmonic generation (SHG). This antenna is based on two gaps coupled to each other so that a resonance at the fundamental and at the doubled fr ...

Second harmonic generation from plasmonic nanoantennas is investigated numerically using a surface integral formulation for the calculation of both the fundamental and the second harmonic electric field. The comparison between a realistic and an idealized ...

A surface integral formulation for the second-harmonic generation (SHG) from periodic metallic-dielectric nano-structures is described. This method requires the discretization of the scatterers' surface in the unit cell only. All the physical quantities in ...

Second-harmonic generation (SHG) from centrosymmetric nanostructures originating from the breaking of inversion symmetry at their surfaces is a well-known phenomenon and is extensively used as a surface probe in nonlinear optical microscopy. In recent year ...

We explore the possibility of strongly influencing the plasmon damping time in nanostructures for efficient second harmonic generation, by taking advantage of the tunability of the narrow linewidth feature in the extinction cross-section exhibited by plasm ...

Krishnan Thyagarajan

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Periodic Motion of Sedimenting Flexible Knots

Augmenting Second Harmonic Generation Using Fano Resonances in Plasmonic Systems

Enhanced second-harmonic generation from double resonant plasmonic antennae

Nonlinear Plasmonics : Engineering Nanostructures for Efficient Second Harmonic Generation

Ultrasensitive Optical Shape Characterization of Gold Nanoantennas Using Second Harmonic Generation

Second-harmonic generation from periodic arrays of arbitrary shape plasmonic nanostructures: a surface integral approach

High yield and high quality nanofabrication of silver and aluminium plasmonic nanostructures

Nonlinear plasmonics of metallic heptamers

Role of symmetry in the second harmonic generation from realistic gold nanoantennas

A new fabrication method for aluminium and silver plasmonic nanostructures

Highly Improved Fabrication of Ag and Al Nanostructures for UV and Nonlinear Plasmonics

A New Fabrication Method for Aluminum and Silver

Influencing the ultrafast plasmon damping time using Fano resonances for nonlinear plasmonics

Enhanced second-harmonic generation from nanoantennas with double resonances

Second harmonic generation from fano metamolecules: A new route for highly sensitive 3D nonlinear plasmon rulers

Engineering absorption losses in plasmonic nanostructures

Influence of the ultrafast plasmon damping time on nonlinear plasmonics