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Confocal surface plasmon microscopy with pupil function engineering

Zhang, Bei; Pechprasarn, Suejit; Zhang, Jing; Somekh, Michael G.

Authors

Bei Zhang

Suejit Pechprasarn

Jing Zhang

Michael G. Somekh

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.

Journal Article Type Article
Publication Date Mar 15, 2012
Journal Optics Express
Electronic ISSN 1094-4087
Publisher Optical Society of America
Peer Reviewed Peer Reviewed
Volume 20
Issue 7
Institution Citation Zhang, B., Pechprasarn, S., Zhang, J., & Somekh, M. G. (2012). Confocal surface plasmon microscopy with pupil function engineering. Optics Express, 20(7), doi:10.1364/OE.20.007388
DOI https://doi.org/10.1364/OE.20.007388
Publisher URL http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-7-7388
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf




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