Kramers’ transitions in a double optical trap — Geometrical Optics

This video shows the Kramers’ transitions for a spherical particle (glass, np = 1.50, R = 1μm) in water (nm = 1.33) trapped by two highly focused beams whose focal points are located at a distance 1.7μm apart. The power of each trapping beam is equal to 0.25mW.

Agnese Callegari, Mite Mijalkov, A. Burak Gököz, and Giovanni Volpe, “Computational toolbox for optical tweezers in geometrical optics,” J. Opt. Soc. Am. B 32, B11-B19 (2015).