Holographic position measurements of an optically trapped nanoparticle

Kazufumi Goto; Takumi Yanagawa; Ryosuke Abe; Yoshio Hayasaki

doi:10.1117/12.2184553

22 June 2015 Holographic position measurements of an optically trapped nanoparticle

Kazufumi Goto, Takumi Yanagawa, Ryosuke Abe, Yoshio Hayasaki

Proceedings Volume 9525, Optical Measurement Systems for Industrial Inspection IX; 95250K (2015) https://doi.org/10.1117/12.2184553
Event: SPIE Optical Metrology, 2015, Munich, Germany

Abstract

Twilight-field method for obtaining interference fringes with high contrast in in-line digital holography regulates only an intensity of the reference light to be close to one of the object light that is ultra weak scattering light from a nanoparticle using a low-frequency attenuation filter. Three-dimensional position measurement of a 40 nm gold nanoparticle held in optical tweezers in water was performed with an inline, low-coherence digital holographic microscope with the twilight-field method.

Citation Download Citation

Kazufumi Goto, Takumi Yanagawa, Ryosuke Abe, and Yoshio Hayasaki "Holographic position measurements of an optically trapped nanoparticle", Proc. SPIE 9525, Optical Measurement Systems for Industrial Inspection IX, 95250K (22 June 2015); https://doi.org/10.1117/12.2184553

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