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TY - CONF AU - Matsuba, S. AU - Fujimoto, M. AU - Hosaka, M. AU - Katoh, M. AU - Kawase, K. AU - Konomi, T. AU - Miyamoto, A. AU - Sasaki, S. AU - Yamamoto, N. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Experimental Demonstration of Vector Beam Generation With Tandem Helical Undulators J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Vector beam is a light beam with spatially modulated polarization state across the beam. Particular examples of vector beam are radial and azimuthal polarization which have donut-shaped intensity and radially and azimuthally oriented linear polarization state. Vector beam has long been interest in the laser community and it is well known that vector beam can be created by superposing two optical vortex beams which have spiral wave fronts. It has been demonstrated that optical vortex beam can be generated from a helical undulator as harmonics. Therefore, we propose a scheme to generate vector beam by superposing two optical vortex beams from two helical undulators in tandem, based on the principle of the ’crossed undulator’. The experiment was carried out at UVSOR BL1U. In this paper, we describe the principle and the experimental details. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1766 EP - 1768 KW - polarization KW - undulator KW - experiment KW - radiation KW - simulation DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPRB037 UR - http://jacow.org/ipac2019/papers/tuprb037.pdf ER -