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TY - CONF AU - Yan, J. AU - Hao, H. AU - Huang, S. AU - Li, J.Y. AU - Mikhailov, S.F. AU - Popov, V. AU - Vinokurov, N. AU - Wu, J. AU - Wu, Y.K. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Experimental Study of a Two-Color Storage Ring FEL J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - Multi-color Free-electron Lasers (FELs) have been developed on linac based FELs over the past two decades. On the storage ring, the optical klystron (OK) FEL in its early days was demonstrated to produce lasing at two adjacent wavelengths with their spectral separation limited by the bandwidth of single wiggler radiation. Here, we report a systematic experimental study on the two-color operation at the Duke FEL facility, the first experimental demonstration of a tunable two-color harmonic FEL operation of a storage ring based FEL. We demonstrate a simultaneous generation of two FEL wavelengths, one in infrared (IR) and the other in ultraviolet (UV) with a harmonic relationship. The experimental results show a good performance of the two-color FEL operation in terms of two-color wavelength tunability, power tunability and power stability. PB - JACoW CP - Geneva, Switzerland SP - 1198 EP - 1200 KW - FEL KW - wiggler KW - operation KW - storage-ring KW - electron DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-MOPWI022 UR - http://jacow.org/ipac2015/papers/mopwi022.pdf ER -