光学
米氏散射
散射
折射率
瑞利散射
拉曼散射
激光阈值
材料科学
半径
弹性散射
光散射
物理
激光器
拉曼光谱
计算机安全
计算机科学
作者
Jay D. Eversole,Horn-Bond Lin,Alan L. Huston,A. J. Campillo
标识
DOI:10.1364/josaa.7.002159
摘要
We describe a procedure for identifying morphology-dependent resonances observed in various optical processes in micrometer-sized droplets. This capability results from the use of a vibrating-orifice aerosol generator in which the radius a of a droplet stream is repeatedly ramped between fixed values, providing characteristic size spectra. When acquired in conjunction with other optical data (such as fluorescence, lasing, and Raman scattering), fixed-angle elastic scattering provides a fiducial spectrum from which mode positions are assigned and transferred. From Lorenz–Mie theory calculations, spectral spans of ≈0.1a are shown to be sufficient to yield unambiguous mode identification, given an initial experimental uncertainty of ±1.5° in the scattering angle and ±6% in the refractive index.
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