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

Citation
T. Gisler et al., MODE-SELECTIVE DYNAMIC LIGHT-SCATTERING - THEORY VERSUS EXPERIMENTAL REALIZATION, Applied optics, 34(18), 1995, pp. 3546-3553
Citations number
10
Categorie Soggetti
Optics
Journal title
ISSN journal
00036935
Volume
34
Issue
18
Year of publication
1995
Pages
3546 - 3553
Database
ISI
SICI code
0003-6935(1995)34:18<3546:MDL-TV>2.0.ZU;2-N
Abstract
We present a quantitative experimental comparison of fiber-based, sing le- and few-mode dynamic light scattering with the classical pinhole-d etection optics. The recently presented theory of mode-selective dynam ic light scattering [Appl. Opt. 32, 2860 (1993)] predicts a collection efficiency and a signal-to-baseline ratio superior to that of a class ical pinhole setup. These predictions are confirmed by our experiments . Using single-mode optical fibers with different cutoff wavelengths a nd 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 si gnal intensity and dynamical resolution.