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

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