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A control of degrees of freedom in the manipulation of light, including amplitude, phase and polarization is important for femto second laser processing with effective light-matter interactions. In this study, we demonstrate femto second laser processing with full control of phase distributions and polarization states of light by computer-generated holograms displayed on the spatial light modulators.
We demonstrated three-dimensional (3D) position measurements of a gold nanoparticle held in optical tweezers in water. The position measurements were performed with an in-line, low-coherence digital holographic microscope with the twilight-field technique. The position of the optically-trapped nanoparticle with a diameter of 60 nm had an axial variation of 7.6 nm in the standard deviation when a 1070...
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