Second harmonic scattering from small particles using Discrete Dipole Approximation
نویسندگان
چکیده
منابع مشابه
Discrete-dipole approximation for scattering calculations
The discrete-dipole approximation (DDA) for scattering calculations, including the relationship between the DDA and other methods, is reviewed. Computational considerations, i.e., the use of complex-conjugate gradient algorithms and fast-Fourier-transform methods, are discussed. We test the accuracy of the DDA by using the DDA to compute scattering and absorption by isolated, homogeneous sphere...
متن کاملAngle-resolved second-harmonic light scattering from colloidal particles.
We report angle-resolved second-harmonic generation (SHG) measurements from suspensions of centrosymmetric micron-size polystyrene spheres with surface-adsorbed dye (malachite green). The second-harmonic scattering profiles differ qualitatively from linear light scattering profiles of the same particles. We investigated these radiation patterns using several polarization configurations and part...
متن کاملScattering of second-harmonic light from small spherical particles ordered in a crystalline lattice
Experimental evidence of scattering of second-harmonic light from the surface of spherical particles of optical dimensions is presented. This mechanism for second-harmonic generation is observed in a suspension of monodisperse spherical colloidal particles, ordered in a centrosymmetric crystalline lattice. In this periodic structure the mechanism of phase matching is provided by the bending of ...
متن کاملDiscrete dipole approximation for calculating extinction and Raman intensities for small particles with arbitrary shapes
We present a discrete dipole approximation ~DDA! method to determine extinction and Raman intensities for small metal particles of arbitrary shape. The Raman intensity calculation involves evaluation of surface electromagnetic fields, and thus is relevant to surface enhanced Raman scattering ~SERS! intensities. We demonstrate convergence of the method by considering light absorption and scatter...
متن کاملSecond Harmonic Generation from Thin Slabs in the Discrete Dipole Approach
RECENTLY nonlinear optical techniques like Second Harmonic Generation (SHG) and Sum Frequency Generation (SFG) have been proven to be versatile and sensitive surface and interface probes [1,2]. They have found application in such varying subjects as the study of the structure of interfacial molecular monolayers and electrodes [1-3], the spectroscopy of buried interfaces [4] and the in situ moni...
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: Optics Express
سال: 2010
ISSN: 1094-4087
DOI: 10.1364/oe.18.021603