2020年12月1日 · An electron scattering scheme is proposed to explore and quantify the focal field of radially polarized beam (RPB). Based on the Richard–Wolf method we deduce the description of the RPB's focal field, analyze the interaction and motion of the electrons in the focal field of the RPB, using both electrodynamical and pondermotive method.

2016年12月8日 · Abstract: We report an all-fiber laser that emits a radially polarized cylindrical vector beam (CVB) at 1 μm based on an intracavity acousto-optic mode converter. We efficiently generate the CVB, taking advantage of the acousto-optic coupling from the HE 11 mode to the TM 01 mode in a two-mode fiber.

phase distribution is crucially important for any kind of cylindrical vector beam. In the measurement the phase distribution of vectorial optical beams such as the RPBs, the most suitable method is the interferometry, that is, interfering the RPB with a phase-known laser beam, there is a small include angle betw

2020年9月15日 · Due to the polarization pattern aligned along the radial direction, radially polarized beam (RPB) has unique focusing features with a dominant longitudinal component [1, 2]. Compared with a spatially homogeneous polarized beam, RPB could be focused to a tighter spot with a high numerical aperture (NA) lens.

A beam with purely longitudinal chirality on the optical axis is the azimuthally-radially polarized beam (ARPB) [31], a superposition of an azimuthally polarized beam (APB) [35], [36], [37], [38], [39] and a radially polarized beam (RPB) [40], [41], [42].

2022年4月25日 · : In this study, an analytical formula for the self-focusing length of a radially polarized beam (RPB) is first derived, which has a similar behavior to the semi-empirical Marburger formula of...

2011年1月11日 · On 1/9/21 construction crews installed this 84-foot steel beam across four Red and Purple Line tracks to support the new Red-Purple Bypass north of Belmont. When the bypass is done in Summer 2021, it will improve CTA service by carrying Kimball-bound Brown Line trains over Red and Purple Line tracks, eliminating a chronic train traffic bottleneck."

2011年12月28日 · (57) A surveying system comprises a plurality of rotary laser devices (1a, 1b), being installed at known points, for projecting laser beams (3a, 3b) in rotary irradiation and for forming laser reference planes (RPa, RPb) respectively, a photodetecting device (5), being installed on a movable support member (4), for receiving the laser beam and ...

We simulate the focal intensity distribution of a radially polarized beam, in view of the vector diffraction theory. We summarize two important rules: (i) the marginal ray of the aperture...

2017年10月30日 · In this paper, the general formula for tightly focusing radially polarized beams (RPB) superposed with off-axis vortex arrays is derived based on Richard-Wolf vector diffraction theory. The off-axis vortex breaks the rotational symmetry of the energy flow along the axial direction and leads to the s …