Abstract
SUMMARY This paper discusses the imaging of thin organic films in scanning optical microscopes using both differential phase contrast and confocal modes. The Lang-muir-Blodgett technique is used to deposit thin films of controllable thickness. Step structures in these films are considered and theoretical models of the imaging are compared with experimental data. The model provides a measurement of film parameters such as thickness and permittivity. The differential phase contrast mode is also proposed as a simple method of assessment of film quality.
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