Phys. Rev. Lett. 100, 174801 (2008) [4 pages]Experimental Characterization of Nonlinear Harmonic Generation in Planar and Helical UndulatorsSee Also: Publisher's Note Received 8 January 2008; published 30 April 2008; corrected 19 August 2008 We present an experimental characterization of the process of coherent harmonic generation in single-pass free electron lasers. The harmonic radiation is obtained by seeding the electron beam stored in the Elettra storage ring with a Ti:sapphire laser. Different methods for generating harmonics are compared between them, and a detailed characterization of the emitted light is performed for different polarizations. Our results also contribute to the debate about the possible presence of a coherent on-axis signal in helical undulators. In this respect, we provide an experimental confirmation of recent theoretical studies that predict no coherent on-axis signal. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.174801
DOI:
10.1103/PhysRevLett.100.174801
PACS:
41.60.Cr, 42.25.Ja, 42.65.Ky
See AlsoPublisher's Note: E. Allaria, F. Curbis, M. Coreno, M. Danailov, B. Diviacco, C. Spezzani, M. Trovo, and G. De Ninno, Publisher’s Note: Experimental Characterization of Nonlinear Harmonic Generation in Planar and Helical Undulators [Phys. Rev. Lett. 100, 174801 (2008)], Phys. Rev. Lett. 101, 089902 (2008). |
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.