Vortex beams and modern techniques in optical micromanipulation
Por:
Volke-Sepúlveda K.
Publicada:
1 ene 2005
Resumen:
Among the most important achievements of modern optics in the last decades is the optical confinement and manipulation of particles whose sizes range from tens of nanometers up to tens of microns. The two main ingredients that allow the confinement of microscopic objects are the linear momentum interchange between light and matter, and the presence of strong intensity gradients in the incident optical field. However, electromagnetic radiation may carry angular momentum as well, which can also be transferred to matter, giving rise to the rotation of the trapped objects. This is the case of the so-called optical vortex fields, whose implementation in optical tweezers will be discussed. The general theoretical basis and complementary experimental results will be presented. © 2005 American Institute of Physics.
Filiaciones:
Volke-Sepúlveda K.:
Instituto de Física, UNAM, Apdo. Postal 20-364, 01000 Mexico D.F., Mexico
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