Abstract
An enhanced ray optics model is applied to the study of the optical
levitation and trapping properties of a glass cubic object. It is
found that for certain highly symmetric orientations simultaneous force
and torque equilibrium can exist in the lowest-order TEM00
laser beam profile. For analytical purposes, the square surfaces of
the cube are divided into two identical triangular surfaces, and the
interaction of the rays with these triangular surfaces simplifies the
computation of the total force and torque on the cube. The
technique developed can easily be extended to the study of other
regular or complex structures.
© 2000 Optical Society of America
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