Optically induced angular alignment of birefringent micro-objects by linear polarization
- 23 November 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (21) , 3034-3036
- https://doi.org/10.1063/1.122663
Abstract
Fluorinated polyimide micro-objects having large birefringence of Δn=−0.13 (refractive index n1=1.62, n2=1.49 for the wavelength λ=1.06 μm), which were fabricated by reactive ion etching and suspended in water (n=1.33), were trapped and angularly aligned in a single Gaussian laser beam (λ=1.06 μm, power P>3 μW). The optically induced angular alignment effect is caused by the transfer of spin angular momentum due to the interaction between their birefringence and the linearly polarized light.Keywords
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