A THIN ABSORBING LAYER AT THE CENTER OF A FABRY-PEROT-INTERFEROMETER

被引：0

作者：

MACHTLE, P ^{[1
]}

MULLER, C ^{[1
]}

HELM, CA ^{[1
]}

机构：

[1] JOHANNES GUTENBERG UNIV,INST PHYS CHEM,JAKOB WELDER WEG 11,D-55099 MAINZ,GERMANY

来源：

JOURNAL DE PHYSIQUE II | 1994年 / 4卷 / 03期

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D O I：

暂无

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The influence of a dye (Rhodamin B) dissolved in solution or adsorbed at an interface at the center of a Fabry-Perot interferometer on the transmission was investigated both experimentally and theoretically. We show that (i) spectra of extremely thin films are measurable at sub-monolayer concentration (one monolayer reduces the transmission by almost-equal-to 50 %), (ii) the transmission is sensitive to the location of an extremely thin film within nm range and (iii) the absorption coefficient is determined quantitatively by comparison between theory and experiment thus permitting one to estimate the local concentration. The results are relevant for the use of dye probes to monitor changes of organic interfaces in the Surface Forces Apparatus as well as generally to detect changes of interfaces between adjacent surfaces.

引用

页码：481 / 500

页数：20