Gaussian Laser Beams with Radial Polarization
نویسندگان
چکیده
If a laser beam is to have radial transverse polarization, the transverse electric must vanish on the symmetry axis, which is charge free in vacuum. However, we can expect a nonzero longitudinal electric field on the axis, noting that the projections onto the axis of the electric field vectors of rays all have the same sign, as shown in Fig. 2a. This contrasts with the case of linearly polarized Gaussian laser beams [2, 3, 4, 5] for which rays at 0◦ and 180◦ azimuth
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