VHOT (vectorial theory of holographic optical trapping) program written in IDL (Interactive Data Language) by Bo Sun to compute the force and torque for planar wave scattering by a sphere to investigate holographical optical trapping. A holographical phasemask can also be used to generate the incident field using an angular spectrum of planar waves. The program include an IDL code for Mie theory. There is a IDL compatible free GDL (GNU Data Language) incremental compiler.

• Link (18 Mar 2009)