Optical waveguiding in individual nanometer-scale organic fibers

被引:170
作者
Balzer, F [1 ]
Bordo, VG
Simonsen, AC
Rubahn, HG
机构
[1] Humboldt Univ, Inst Phys, D-10115 Berlin, Germany
[2] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia
[3] Syddansk Univ, Inst Fys, DK-5230 Odense, Denmark
来源
PHYSICAL REVIEW B | 2003年 / 67卷 / 11期
关键词
D O I
10.1103/PhysRevB.67.115408
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We show by a combination of spectrally resolved fluorescence and atomic force microscopy that individual, single crystalline, needlelike aggregates of hexaphenyl molecules with submicron cross-sectional dimensions act as optical waveguides ("nanofibers") in the blue spectral range. The nanofibers are formed via laser-supported, dipole-assisted self-assembly on single crystalline mica substrates. This method allows us to modify the morphology of individual aggregates as well as their mutual distances and the overall orientation of needle arrays. An analytical theory describes quantitatively the waveguiding behavior. From measurements of the damping of propagating 425-nm light the imaginary part of the dielectric function of individual nanoscaled organic aggregates is determined.
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页数:8
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