We demonstrate for the first time, second-harmonic generation (SHG) is allowed through the control of optical modal asymmetry rather than breaking the symmetry of material or geometry. Our idea is realized through a plasmonic two-wire transmission-line. As compared to other SHG using surface plasmon polaritons, our second-harmonic signal remains guided.
Talbot self-imaging is experimentally extended to cylindrical coordinate for the first time. Intensity petal repetition multiplication in the azimuthal angle of arbitrary multiplicative factor is demonstrated.
We report the first creation of near-field orbital angular momentum excited by linearly polarized light that carries no optical angular momentum. The excited surface plasmons are measured using near-field scanning optical microscope and are found in excellent agreements to simulations quantitatively.
We perform the first experimental demonstration of deterministic mode conversion in a complex integrated plasmonic nanocircuit.
We report the first experimental demonstration of selective trapping or rotation of isotropic dielectric micro-particles using a single surface plasmon polariton generation device.