Generation and characterization of superradiant undulator radiation

Thesis/Dissertation · Sun Jun 01 04:00:00 EDT 1997

DOI:https://doi.org/10.2172/515579· OSTI ID:515579

Bocek, David ^[1]

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1. Stanford Univ., CA (United States)

High-power, pulsed, coherent, far-infrared (FIR) radiation has many scientific applications, such as pump-probe studies of surfaces, liquids, and solids, studies of high-T_c superconductors, biophysics, plasma diagnostics, and excitation of Rydberg atoms. Few sources of such FIR radiation currently exist. Superradiant undulator radiation produced at the SUNSHINE (Stanford UNiversity SHort INtense Electron-source) is such a FIR source. First proposed in the mm-wave spectral range by Motz, superradiant undulator radiation has been realized in the 45 μm to 300 μm spectral range by using sub-picosecond electron bunches produced by the SUNSHINE facility. The experimental setup and measurements of this FIR radiation are reported in this thesis. In addition, to being a useful FIR source, the superradiant undulator radiation produced at SUNSHINE is an object of research in itself. Measured superlinear growth of the radiated energy along the undulator demonstrates the self-amplification of radiation by the electron bunch. This superlinear growth is seen at 47 μm to 70 {micro}m wavelengths. These wavelengths are an order of magnitude shorter than in previous self-amplification demonstrations.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 515579
• Report Number(s): SLAC-R--512; ON: DE97008278
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATOR FACILITIES
ELECTRON BEAMS
FAR INFRARED RADIATION
FREE ELECTRON LASERS
LIGHT SOURCES
LINEAR ACCELERATORS
OPERATION
PERFORMANCE
RELATIVISTIC RANGE
USES
WIGGLER MAGNETS