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Journal articles
Scattering Forces from the Curl of the Spin Angular Momentum of a Light Field
Abstract : Light forces on small (Rayleigh) particles are usually described as the sum of two terms: the dipolar or gradient force and the scattering or radiation pressure force. The scattering force is traditionally considered proportional to the Poynting vector, which gives the direction and magnitude of the momentum flow. However, as we will show, there is an additional nonconservative contribution to the scattering force arising in a light field with nonuniform helicity. This force is shown to be proportional to the curl of the spin angular momentum of the light field. The relevance of the spin force is illustrated in the simple case of a 2D field geometry arising in the intersection region of two standing waves.
Cited literature [13 references]
https://hal-iogs.archives-ouvertes.fr/hal-00669771
Contributor : Christophe Sauvan <>
Submitted on : Thursday, March 31, 2016 - 4:38:19 PM
Last modification on : Wednesday, September 16, 2020 - 5:45:34 PM
Long-term archiving on: : Monday, November 14, 2016 - 11:52:23 AM
Contributor : Christophe Sauvan <>
Submitted on : Thursday, March 31, 2016 - 4:38:19 PM
Last modification on : Wednesday, September 16, 2020 - 5:45:34 PM
Long-term archiving on: : Monday, November 14, 2016 - 11:52:23 AM
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00669771.pdf
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