Nonstationary photonic jet from dielectric microsphere

作者：Geints Yuri E^*; Panina Ekaterina K; Zemlyanov Alexander A

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2013, 131: 146-152.

DOI：10.1016/j.jqsrt.2012.11.025

• Dielectric microsphere
• Photonic jet
• Time-dependent scattering
• Resonances of the optical field

A photonic jet commonly denotes the specific spatially localized region in the near-field forward scattering of a light wave at a dielectric micron-sized particle. We present the calculations of the transient response of an airborne silica microsphere illuminated by a femtosecond laser pulse. The spatial area constituting the photonic jet is theoretically investigated and the temporal dynamics of jet dimensions as well as of jet peak intensity is analyzed. The role of morphology-dependent resonances in jet formation is highlighted. The evolution scenario of a nonstationary photonic jet generally consists of the non-resonant and resonant temporal phases. In every phase, the photonic jet can change its spatial form and intensity.

• 出版日期2013-12