In the first part of this work, correlation between optical activity and elements of magnetic susceptibility tensor (MST) for five classes of model small molecules containing a single chiral center has been studied using quantum computational techniques at DFT-B3LYP level of theory with 6-311G basis set. Several molecular properties are used to reduce the MST elements prior to the examination o...

We report electromagnetically induced gain in a highly degenerate two-level rotational vibrational molecular system. Using two photon Raman-type interaction with right and left circularly polarized pump and probe waves, the Zeeman coherence is established within the manifold of degenerate sublevels belonging to a rotational vibrational eigenstate. We analytically and numerically calculate the t...

Extrinsic or pseudo-chiral (meta)surfaces have an achiral structure, yet they can give rise to circular dichroism when the experiment itself becomes chiral. Although these surfaces are known to yield differences in reflected and transmitted circularly polarized light, the exact mechanism of the interaction has never been directly demonstrated. Here we present a comprehensive linear and nonlinea...

In this work, the study of two-photon absorption by gold nanoparticles different diameters photodeposited onto core a single-mode optical fibre is presented. The photodeposition with 10, 20, 50 and 100 nm was achieved using continuous wave laser at wavelength 1550 power mW. Nonlinear characterization carried out P-scan technique high gain erbium doped amplifier pulses 20 ns frequency 10 kHz, th...

nanocomposite materials, including noble metal nanoparticles embedded in a dielectric host medium, are interesting because of their optical properties linked to surface plasmon resonance phenomena. for studding of nonlinear optical properties and/or energy transfer process, these materials may be excited by ultrashort pulse laser with a temporal width varying from some femtoseconds to some hund...

Second-order nonlinear optical processes enable a wide range of applications used in research and industry. The majority available second-order devices however relies on bulk crystals with low nonlinearity. By exploiting the advancements made integrated optics, materials large nonlinearity can efficient small-sized on-chip at cost. Unfortunately, silicon nitride, mostly for photonics circuits e...