Title :
Three-dimensional position measurement of a gold nanoparticle trapped in optical tweezers using in-line low-coherence digital holography
Author :
Hayasaki, Yoshio ; Sato, Akira
Author_Institution :
Center for Opt. Sci. & Educ. (CORE), Utsunomiya Univ., Utsunomiya, Japan
Abstract :
We demonstrate the three-dimensional position measurement of a 100nm-gold nanoparticle held in optical tweezers in solution using an in-line low-coherence digital holographic microscope. The trapped gold nanoparticle had the axial movement of 4.5nm in the standard deviation when a 300mW laser beam was focused with an 1.25NA objective lens.
Keywords :
gold; holography; laser beam effects; light coherence; nanoparticles; particle traps; position measurement; radiation pressure; Au; axial movement; gold nanoparticle traps; laser beam focusing; objective lens; optical tweezers; power 300 mW; size 100 nm; three-dimensional position measurement; Digital holography; gold nanoparticle; low coherence; optical tweezers;
Conference_Titel :
Information Optics (WIO), 2012 11th Euro-American Workshop on
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-2000-9
Electronic_ISBN :
978-1-4673-1998-0
DOI :
10.1109/WIO.2012.6488901
