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Wu YK, Yan J, Hao H, Li JY, Mikhailov SF, Popov VG, Vinokurov NA, Huang S, Wu J. Widely Tunable Two-Color Free-Electron Laser on a Storage Ring. Phys Rev Lett 2015; 115:184801. [PMID: 26565470 DOI: 10.1103/physrevlett.115.184801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Indexed: 06/05/2023]
Abstract
With a wide wavelength tuning range, free-electron lasers (FELs) are well suited for producing simultaneous lasing at multiple wavelengths. We present the first experimental results of a novel two-color storage ring FEL. With three undulators and a pair of dual-band mirrors, the two-color FEL can lase simultaneously in infrared (IR) around 720 nm and in ultraviolet (UV) around 360 nm. We have demonstrated independent wavelength tuning in a wide range (60 nm in IR and 24 nm in UV). We have also realized two-color harmonic operation with the UV lasing tuned to the second harmonic of the IR lasing. Furthermore, we have demonstrated good power stability with two-color lasing, and good control of the power sharing between the two colors.
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Affiliation(s)
- Y K Wu
- FEL Laboratory, TUNL and Department of Physics, Duke University, Durham, North Carolina 27708-0319, USA
| | - J Yan
- FEL Laboratory, TUNL and Department of Physics, Duke University, Durham, North Carolina 27708-0319, USA
| | - H Hao
- FEL Laboratory, TUNL and Department of Physics, Duke University, Durham, North Carolina 27708-0319, USA
| | - J Y Li
- FEL Laboratory, TUNL and Department of Physics, Duke University, Durham, North Carolina 27708-0319, USA
| | - S F Mikhailov
- FEL Laboratory, TUNL and Department of Physics, Duke University, Durham, North Carolina 27708-0319, USA
| | - V G Popov
- FEL Laboratory, TUNL and Department of Physics, Duke University, Durham, North Carolina 27708-0319, USA
| | - N A Vinokurov
- Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia
| | - S Huang
- Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China
| | - J Wu
- SLAC National Accelerator Laboratory, Stanford University, Stanford, California 94309, USA
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