0030-4018/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.optcom.2010.01.053 * Corresponding author. E-mail addresses: [email protected] (G.R. Kumar), sh (S. Mahamuni). 1 Present address: K.J. Somaiya College of Sc. & Comm 077, India. The nonresonant third order nonlinear optical properties of three different sized Mn-doped ZnSe quantum dots (QDs) are investigated. The nonlinear absorption ...

A phase diagram, defined by the amplitude square and phase of scattering coefficients for absorption cross-section in each individual channel, is introduced as a universal map on the electromagnetic properties for passive scatterers. General physical bounds are naturally revealed based on the intrinsic power conservation in a passive scattering system, entailing power competitions among scatter...

A well-organized monolayer of alkylated perylene-3,4,9,10-tetracarboxylic-3,4,9,10-diimide (PTCDI) has been formed onto CVD graphene transferred on a transparent substrate. Its structure has been probed by scanning tunnelling microscopy and its optical properties by polarized transmission spectroscopy at varying incidence. The results show that the transition dipoles of adsorbed PTCDI are all o...

The total reaction cross section of high-energy nucleus-nucleus collision refects the nuclear density profiles colliding nuclei and has been a standard tool to investigate size properties short-lived unstable nuclei. This basis relies on assumption that is strongly absorptive in sense an optical model. However, this property does not hold completely, while incomplete absorption occurs when over...

The absorption and emission problems of the brane-localized and bulk scalarsare examined when the spacetime is a (4+n)-dimensional Reissner-Nordströmblack hole. Making use of an appropriate analytic continuation, we computethe absorption and emission spectra in the full range of particle’s energy. Forthe case of the brane-localized scalar the presence of the nonzero inner ho...

Using the spin properties of nitrogen-vacancy (NV) centers in levitated diamond, we characterize absorption single nanodiamonds. We first calibrate thermometry response NV embedded our Then, using this calibration, estimate cross-section show that is extrinsic and dominated by volumic effects. Our work opens way to diamond materials optimization for levitation quantum experiments. It also demon...

The selection of nanoparticles for achieving efficient contrast for biological and cell imaging applications, as well as for photothermal therapeutic applications, is based on the optical properties of the nanoparticles. We use Mie theory and discrete dipole approximation method to calculate absorption and scattering efficiencies and optical resonance wavelengths for three commonly used classes...

Knowledge about Rayleigh scattering cross sections is relevant to predictions about radiative transfer in the atmosphere, and needed to calibrate the reflectivity of mirrors that are used in high-finesse optical cavities to measure atmospheric trace gases and aerosols. In this work we have measured the absolute Rayleigh scattering cross-section of nitrogen at 405.8 and 532.2 nm using cavity rin...