Confocal surface plasmon microscopy with pupil function engineering

Zhang, Bei and Pechprasarn, Suejit and Zhang, Jing and Somekh, Michael G. (2012) Confocal surface plasmon microscopy with pupil function engineering. Optics Express, 20 (7). pp. 7388-7397. ISSN 1094-4087

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Abstract

Surface Plasmon microscopy can measure local changes of refractive index on the micron scale. Interferometric plasmon imaging delivers quantitative high spatial resolution sensitive to refractive index. In addition the so called V(z) method allows image contrast to be controlled by varying the sample defocus without substantially degrading spatial resolution. Here, we show how a confocal system provides a simpler and more stable alternative. This system, however, places greater demands on the dynamic range of the system. We therefore use a spatial light modulator to engineer the microscope pupil function to suppress light that does not contribute to the signal.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/709746
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: https://doi.org/10.1364/OE.20.007388
Depositing User: Grogan, Mrs Jane
Date Deposited: 04 Apr 2014 12:18
Last Modified: 04 May 2020 16:32
URI: http://eprints.nottingham.ac.uk/id/eprint/2868

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