Two-dimensional tunable photonic crystals

Abstract

We call a photonic crystal tunable if its spectrum can be altered by an external electric or magnetic field. One of the two constitutive components of the proposed periodic composite structure has either electric permittivity or magnetic permeability dependent on the external electric or magnetic field. Consequently, the electromagnetic spectrum of the photonic crystal can be altered over a wide range by the external quasistationary uniform field. The tunable photonic crystal exhibits some useful features reminiscent of those accompanying the well-known electronic topological phase transitions in metals. Thorough theoretical analysis of a two-dimensional tetragonal periodical structure is undertaken. This specific periodic structure exhibits the most important features of a tunable photonic crystal. ͓S0163-1829͑98͒06305-X͔

Ultrafast Optical Switching in Three-Dimensional Photonic Crystals

“…The dynamic shift of the PSB induced by the action of the optical nonlinearity was first analyzed by Scalora and co-workers in one-dimensional photonic crystals [25], the theory was extended for the case of two [88] and three dimensions [89,90]. The first optically induced switching in a 3D photonic crystal was observed in crystalline colloidal arrays of dyed poly-spheres on the nanosecond timescale [91].…”

Selective lasing in multimode periodic and non‐periodic nanopillar waveguides

“…This is an alternative to the known concept of tunable lasers where the resonator itself is modified, e.g. by thermal, electrooptical (using liquid crystals) or micromechanical means [16][17][18][19] to tune a given mode to have the desired frequency. One of the advantages may be that modes selected by injection seeding can be better pre-engineered to meet the desired fundamental (e.g., cavity QED) or application purposes [10].…”

2d Magnetic Photonic Crystals With Square Lattice-Group Theoretical Standpoint

“…In order to illustrate these concepts we shall consider a simple example of the two-dimensional (2D) square magnetic crystal lattice of circular ferrite rods. Some numerical results for magnetic crystals can be found in [9][10][11][12]25].…”