SPHERICAL-CAVITY-MODE ASSIGNMENTS OF OPTICAL RESONANCES IN MICRODROPLETS USING ELASTIC-SCATTERING

被引:29
作者
EVERSOLE, JD [1 ]
LIN, HB [1 ]
HUSTON, AL [1 ]
CAMPILLO, AJ [1 ]
机构
[1] USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375
来源
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1990年 / 7卷 / 12期
关键词
D O I
10.1364/JOSAA.7.002159
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
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. © 1990 Optical Society of America.
引用
收藏
页码:2159 / 2168
页数:10
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