Publications [#249366] of Ying Wu

Papers Published

1. Wu, YK; Vinokurov, NA; Mikhailov, S; Li, J; Popov, V, High-Gain Lasing and Polarization Switch with a Distributed Optical-Klystron Free-Electron Laser, Phys. Rev. Lett., vol. 96 no. 22 (2006), pp. 224801, ISSN 0031-9007 [16803315], [doi]
   (last updated on 2026/02/08)

   Abstract:
   This Letter reports the first experimental results from the world's first distributed optical-klystron (DOK) free-electron laser (FEL), the DOK-1 FEL, at Duke University. The DOK-1 FEL is a hybrid system, comprised of four wigglers: two horizontal and two helical. With the DOK-1 FEL, we have obtained the highest FEL gain among all storage ring based FELs at 47.8% (±2.7%) per pass. We have also demonstrated that the FEL gain can be enhanced by increasing electron bunching using wigglers with a different polarization. Furthermore, we have realized controlled polarization switches of the FEL beam by a nonoptical means through the manipulation of a buncher magnet.