Open AccessFormation of X-pulses in periodically gain/loss modulated materials
Author(s) -
Yu. Loiko,
Muriel Botey,
R. Herrero,
Kęstutis Staliūnas
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.011271
Subject(s) - optics , modulation (music) , brillouin zone , attenuation , wavelength , brillouin scattering , materials science , anisotropy , pulse shaping , physics , laser , acoustics
We propose a versatile and efficient technique for the formation of X-pulses in materials with a periodical gain/loss modulation on the wavelength scale. We show that in such materials the strong wave-vector anisotropy of amplification/attenuation of the Bloch modes enables the shaping of ultra-short light pulses around the edges of the first Brillouin zone. X-pulses generation is numerically demonstrated and the optimum conditions are derived; specific characteristics of X-pulses can be tailored by appropriate selection of the geometry and modulation depth.