Self-oscillating beams in a photonic lattice
Department of Physics, Anadolu University - Eskişehir, Turkey
Received: 24 April 2016
Accepted: 17 June 2016
We study self-acceleration in a parabolic tight-binding lattice and construct a self-accelerating wave packet in k-space. As opposed to accelerating Airy wave packets in free space, self-acceleration occurs in k-space and this leads to self-oscillation in the lattice. We analytically derived a formula for self-acceleration and perform numerical computation to see such an oscillation for the truncated wave.
PACS: 42.25.Hz – Interference / 42.82.Et – Waveguides, couplers, and arrays
© EPLA, 2016