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Partially polarized fields generated by constant-amplitude (non-thermal) beams |
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| Authors: | G J Troup R G Turner B J Walsh |
| Institution: | 1. Laboratorio di Elettronica Quantistica, Via Panciatichi 56/30, Firenze, Italy 2. Physics Department, Monash University, Clayton, Victoria, Australia 3. Careers and Appointments Office, Monash University, Clayton, Victoria, Australia |
| Abstract: | The necessity for polarization-tensors of higher order than the 2×2 polarization matrix is clearly demonstrated, by considering two inequivalent situations arising from the superposition of two constant-amplitude beams with a random phase difference between them. The partially- and unpolarized fields from the superposition of two circularly polarized beams show no anisotropy in intensity fluctuations when viewed by a plane-polarized detector. This is not the case for the partially- and even the unpolarized beam formed from two plane-polarized beams. In passing, thesimple form of the polarization curve observed by a rotatable plane-polarized detector subject to an elliptically polarized beam, is derived. |
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