| Autor(es): |
Ambrosio, Leonardo Andre
;
IEEE
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | 2018 SBFOTON INTERNATIONAL OPTICS AND PHOTONICS CONFERENCE (SBFOTON IOPC); v. N/A, p. 5-pg., 2018-01-01. |
| Resumo | |
The present work is a first attempt to introduce physical or finite energy axially symmetric fields, under the paraxial approximation, into the theoretical framework of the generalized Lorenz-Mie theory. Based on analytical descriptions in terms of a discrete superposition of Bessel-Gauss beams, we derive the beam shape coefficients of a particular class of axially symmetric beams, viz. truncated zero-order scalar Bessel beams. The analyticity of the present approach is interesting from the perspective that it avoids, from the very outset, extensive computational optimization processes involved in ABCD optical systems or the introduction of non-physical ideal (infinite energy) solutions of Maxwell's equations. As an example of application, optical forces exerted on spherical nano and microparticles are calculated and compared with those forces as evaluated with ideal scalar Bessel beams. Since it can be readily extended so as to encompass other types of axially symmetric truncated beams, we envision the present approach as a fast computational technique for immediate implementation in the analysis of light scattering by nano-and micro-particles. (AU) | |
| Processo FAPESP: | 17/10445-0 - Feixes de luz não difrativos microestruturados para micromanipulação óptica |
| Beneficiário: | Leonardo Andre Ambrosio |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 16/11174-8 - Descrições eficientes de superposições discretas de feixes de Bessel escalares (Frozen Waves) na teoria generalizada de Lorenz-Mie para aplicações em aprisionamento óptico |
| Beneficiário: | Leonardo Andre Ambrosio |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |