0000000001312075

AUTHOR

Shailendra K. Chaubey

showing 3 related works from this author

Directional Second Harmonic Generation Controlled by Sub-wavelength Facets of an Organic Mesowire

2018

Directional harmonic generation is an important property characterizing the ability of nonlinear optical antennas to diffuse the signal in well-defined region of space. Herein, we show how sub-wavelength facets of an organic molecular mesowire crystal can be utilized to systematically vary the directionality of second harmonic generation (SHG) in the forward scattering geometry. We demonstrate this capability on crystalline diamonoanthraquinone (DAAQ) mesowires with subwavelength facets. We observed that the radial angles of the SHG emission can be tuned over a range of 130 degrees. This angular variation arises due to spatially distributed nonlinear dipoles in the focal volume of the excit…

FOS: Physical sciencesPhysics::Optics02 engineering and technologyCondensed Matter - Soft Condensed Matter01 natural sciencesSignal010309 opticsOptics0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)High harmonic generationElectrical and Electronic EngineeringEngineering (miscellaneous)PhysicsCondensed Matter - Mesoscale and Nanoscale Physicsbusiness.industrySecond-harmonic generationNonlinear optics021001 nanoscience & nanotechnologyAtomic and Molecular Physics and OpticsDipoleNonlinear systemExcited stateSoft Condensed Matter (cond-mat.soft)0210 nano-technologybusinessExcitationOptics (physics.optics)Physics - Optics
researchProduct

si-movie1.avi

2018

The video describes the SHG signal from an organic meso wire under laser illumination. We show the generation of SHG from different facets of the wire by moving the illumination spot transversly accross the mesowire axis.

researchProduct

si-movie1.avi

2018

The video describes the SHG signal from an organic meso wire under laser illumination. We show the generation of SHG from different facets of the wire by moving the illumination spot transversly accross the mesowire axis.

researchProduct