Cross-grating phase microscopy for nanophotonics

Guillaume Baffou

doi:10.1117/12.2605589

2 March 2022 Cross-grating phase microscopy for nanophotonics

Guillaume Baffou

Proceedings Volume 11970, Quantitative Phase Imaging VIII; 1197006 (2022) https://doi.org/10.1117/12.2605589
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

Quantitative phase microscopies (QPMs) have been mainly used for applications in cell biology, for around 2 decades. In this article, we show how cross-grating phase microscopy (CGM), a high-resolution, high-sensitivity QPM, recently expanded the scope of QPMs to applications in nanophotonics. In particular, this article explains how the intensity and phase images acquired by CGM can be processed to determine all the optical properties of imaged nanoparticles, 2D-materials and metasurfaces. We also explain how CGM can be used as a temperature microscopy technique. This latter imaging modality led to a large variety of works in the 2010s based on the optical heating of plasmonic nanoparticles for photothermal studies in physics, chemistry and biology at the microscale, in which label-free, microscale temperature measurements were pivotal.

Conference Presentation

Citation Download Citation

Guillaume Baffou "Cross-grating phase microscopy for nanophotonics", Proc. SPIE 11970, Quantitative Phase Imaging VIII, 1197006 (2 March 2022); https://doi.org/10.1117/12.2605589

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