Fabrication of two-dimensional elliptic photonic lattices in photorefractive crystal by optical induction method

Optical induction of non-diffracting discrete photonic lattice

“…However, in this way, multi-beam interference must rely on a special and more expensive device. We proposed a simple experimental method to generate multi-beam interference using an amplitude mask with holes [16][17][18][19][20][21] instead of DBS. This method is inexpensive.…”