نتایج جستجو برای: qpm
تعداد نتایج: 294 فیلتر نتایج به سال:
The alternative to the standard formulation of QPM in the infinite momentum frame is suggested. The proposed approach does not require any extra assumptions in addition, consistently takes into account the parton transversal momenta and does not prefer any special reference system. The standard approach is involved as a limiting case. In the result the modified relations between the structure a...
Dipole excitations in neutron-rich nuclei below the neutron threshold are investigated. The method is based on Hartree-Fock-Bogoliubov (HFB) and Quasiparticle-Phonon Model (QPM) theory. Of our special interest are the properties of the low-lying 1 Pygmy Resonance and the two-phonon quadrupole-octupole 1 states in Sn-isotopes including exploratory investigations for the experimentally unknown ma...
We report the experimental demonstration of all-optical format conversion by exploiting the cascaded second-harmonic generation and difference-frequency generation (cSHG/DFG) in a periodically poled lithium niobate (PPLN) waveguide assisted by the reflective semiconductor optical amplifier (RSOA)-based active mode-locking. 10 and 20 Gbit/s format conversions from non-return-to-zero (NRZ) to ret...
We consider the adiabatic geometric phase (AGP) in sum frequency generation process under undepleted pump approximation. The Bloch sphere is stretched or compressed by adjusting modulation wave vector, Δ, which one of control parameters quasiphase matching (QPM). In this paper, two kinds parametric rotation schemes on are studied: elliptical and wedge rotation. find that AGP generated re...
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