Phys. Rev. Lett. 88, 254801 (2002) [4 pages]Steady-State Far-Infrared Coherent Synchrotron Radiation detected at BESSY IIReceived 29 October 2001; revised 8 April 2002; published 4 June 2002 At BESSY II it is demonstrated that far-infrared coherent synchrotron radiation (CSR) can be generated by a controlled, steady-state process at storage rings. As an indication for coherent emission, the radiated power grows with the square of the beam current. The spectrum was analyzed by an interferometer in the 1-mm to 0.3-mm wavelength range. The CSR was enhanced more than 3000 times above background; the incoherent radiation remained below the background level. Steady-state and bursting CSR were discriminated by time resolved analysis from μ seconds to seconds. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.254801
DOI:
10.1103/PhysRevLett.88.254801
PACS:
41.60.Ap, 29.20.-c
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