MODE-SELECTIVE DYNAMIC LIGHT-SCATTERING - THEORY VERSUS EXPERIMENTAL REALIZATION

被引:64
作者
GISLER, T
RUGER, H
EGELHAAF, SU
TSCHUMI, J
SCHURTENBERGER, P
RICKA, J
机构
[1] ETH ZENTRUM,INST POLYMERE,CH-8092 ZURICH,SWITZERLAND
[2] ETH ZENTRUM,ELEKTRONENMIKROSKOPIE LAB 1,CH-8092 ZURICH,SWITZERLAND
[3] UNIV BERN,INST ANGEW PHYS,CH-3012 BERN,SWITZERLAND
来源
APPLIED OPTICS | 1995年 / 34卷 / 18期
关键词
D O I
10.1364/AO.34.003546
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a quantitative experimental comparison of fiber-based, single- and few-mode dynamic light scattering with the classical pinhole-detection optics. The recently presented theory of mode-selective dynamic light scattering [Appl. Opt. 32, 2860 (1993)] predicts a collection efficiency and a signal-to-baseline ratio superior to that of a classical pinhole setup. These predictions are confirmed by our experiments. Using single-mode optical fibers with different cutoff wavelengths and commercially available mechanical components, we have constructed a mode-selective detection optics in a simple and compact dynamic light-scattering spectrometer that permits an optimal compromise between signal intensity and dynamical resolution.
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页码:3546 / 3553
页数:8
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