Compression of ultrashort light pulses in photonic crystals: when envelopes cease to be slow

Numerical model for investigation of dynamics of short-cavity short-pulse standing-wave lasers

“…These modes are near the same as the modes of DBF lasers [8]: main difference occurs due to high index contrast of photonic crystal layers. In photonic band gap structures as well as in VCSELs NSE solitons and cavity solitons were observed [9,10]. Microlasing, optical switching, polarization effects, optical memory and enhanced non-linear properties are demanding the development of efficient, accurate and flexible simulation tools for design of these devices.…”

“…However for PBG with saturable gain the calculations of field and medium polarization demands recursive procedure [2,5]. For the structures having small numbers of layers FDTD calculations [9] and different "mean field" numerical models [11]- [18] were used.…”

Gaussian pulse mixing and scattering by finite nonlinear layered structures

“…Driven by the practical needs, research in the physical phenomena underlying pulse propagation and scattering always attracted strong interest. While most studies in metamaterials and their prospective applications to date have been focused on the linear effects, nonlinear artificial materials have huge potential not only for controlling the waveforms but also for signal amplification and conversion between different frequency bands through nonlinear parametric processes [1][2][3][4][5][6]. The periodic and quasi-periodic layered semiconductor structures represent an important class of artificial electromagnetic media possessing natural nonlinearity.…”

Transmission modulation in the passband of polystyrene photonic crystals

“…In this field the self-organized 3D photonic crystals and corresponding thin films made of micronsize silica or polystyrene spheres have been extensively studied due to easy preparation of the sample. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Yet the transmission properties of these photonic crystals have been well understood in the frame of Bragg refraction, where each sphere is considered as a geometric point. The size of the sphere affects only the average dielectric constant of the sample.…”