Theory of multidimensional parametric band-gap simultons
نویسندگان
چکیده
منابع مشابه
Theory of multidimensional parametric band-gap simultons
Multidimensional spatiotemporal parametric ‘‘simultons’’ ~simultaneous solitary waves! are possible in a nonlinear x (2) medium with a Bragg grating structure, where large effective dispersion occurs near two resonant band gaps for the carrier and second-harmonic field, respectively. The enhanced dispersion allows much reduced interaction lengths, as compared to bulk medium parametric simultons...
متن کاملParametric Simultons in Nonlinear Lattices
Parametric simultaneous solitary wave (simulton) excitations are shown possible in nonlinear lattices. Taking a one-dimensional diatomic lattice with a cubic potential as an example we consider the nonlinear coupling between the upper cutoff mode of acoustic branch (as a fundamental wave) and the upper cutoff mode of optical branch (as a second harmonic wave). Based on a quasi-discreteness appr...
متن کاملMultidimensional parametric quantum solitons
We consider the parametric quantum field theory involving cubic and quartic couplings of two bosonic fields. This is exactly soluble for the two-particle energy eigenstates ~or quantum solitons! in one, two, and three space dimensions. We estimate the binding energies and corresponding radii in the case of photonic fields in nonlinear optical materials, and Bose-Einstein condensates. @S1050-294...
متن کاملBand-Gap Tuning Of Electron Beam Evaporated Cds Thin Films
The effect of evaporation rate on structural, morphological and optical properties of electron beam evaporated CdS thin films have been investigated. CdS thin film deposited by electron beam evaporation method in 12nm/min and 60nm/min evaporation rates on glass substrates. X-ray diffraction, scanning electron microscopy, UV-Vis-NIR spectroscopy and Atomic Force Microscopy were used to character...
متن کاملClosing the Gap in Band Theory Filling - Enforced
Band theory is a pillar of solid state physics, laid down by Felix Bloch nearly a century ago. Based on the quantum mechanics of an electron moving under a periodic potential, band theory gives a remarkably simple criterion regarding metals and insulators: a band insulator is only possible when the number of electrons in the unit cell is an even integer. This textbook counting rule only assumes...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review E
سال: 1998
ISSN: 1063-651X,1095-3787
DOI: 10.1103/physreve.58.5025