Wavelength dependence of trapping efficiency in optical tweezers

In this paper, the trapping efficiencies of the optical tweezer with different laser wavelength are studied by capturing a microparticle. The best trapping efficiency of the optical trapping occurs at the wavelength of 532 nm. In addition, the experiment of trapping yeast is also conducted at the wavelength of 650 nm. The corresponding trapping efficiency is found to be 2.80 %.