Synthesis and characterization of partially coherent beams with propagation-invariant transverse polarization pattern

Mueller Matrix Polarimetry by Means of Azimuthally Polarized Beams and Adapted Commercial Polarimeter

“…A He-Ne laser stabilized in intensity and frequency is used as light source. A linear polarizer P 1 selects the incident state of polarization, which must be linearly polarized along a direction parallel to the PC axis, in order for the PC to work properly (Ramírez-Sánchez et al, 2009;Ramírez-Sánchez et al, 2010). A microscope objective O 1 and a lens L 1 are used to expand the beam impinging onto the PC.…”

“…APB is a particular case of a more general kind of beams, the so called spirally polarized beams that were introduced several years ago (Gori, 2001) and has been experimentally synthesized and applied in different areas (Zhan, 2009;Ramírez-Sánchez et al, 2009;Ramírez-Sánchez et al, 2010). The polarization characteristics of an APB are invariant upon free propagation, then the sample under test can be placed at any plane along the beam (de Sande et al, 2017).…”

Polarization changes at Lyot depolarizer output for different types of input beams

“…The LD does not change the degrees of polarization of the input beam; it just modifies the state of polarization at each point of the transverse section. In order to put this fact into evidence, let us consider a particular case of nonuniformly and totally polarized (NUTP) beam: the spirally polarized beam (SPB) [22,23,30]. An SPB can be represented by the following Stokes vector:…”

“…For example, beams with a state of polarization that varies across the transverse section, like radially and azimuthally polarized fields, as well as fields which can be represented as an uncorrelated superposition of beams with the same or different states of polarization have been studied and/or synthesized [18][19][20][21][22][23]. On the other hand, several spectral-beam-combining schemes have been developed in order to obtain an efficient power scaling of laser radiation; see for example [24,25].…”

Partially Coherent Linearly Polarized Sources with Inhomogeneous Azimuth

“…Works can be found in the literature that deal with partially coherent and partially or totally polarized sources, from both theoretical and experimental points of view (Friberg and Sudol, 1982;Friberg and Turunen, 1988;Serna et al, 1992;Santarsiero et al, 1999;Piquero et al, 2002;Santarsiero et al, 2009;Ramírez-Sánchez et al, 2010;de Sande et al, 2012;Maluenda et al, 2013). The goal for proposing different kind of light sources generally is to get a better performance of different optical devices and techniques where specific characteristics of the used light are required depending on the application.…”