Lasing attempt with a microwiggler on the Los Alamos FEL

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 331; no. 1; pp. 48 - 51
• Main Authors: Warren, R.W., O'Shea, P.G., Bender, S.C., Carlsten, B.E., Early, J.W., Feldman, D.W., Fortgang, C.M., Goldstein, J.C., Schmitt, M.J., Stein, W.E., Wilke, M.D., Zaugg, T.J., Newnam, B.E., Sheffield, R.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.1993
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/0168-9002(93)90011-6

The APEX FEL normally lases near a wavelength of 3 μm using a permanent magnet wiggler with a 2.7-cm period and a linear accelerator of 40-MeV energy. Los Alamos National Laboratory is conducting a series of experiments with the goal of lasing at significantly shorter wavelengths with the same accelerator and the same kind of near-concentric resonator, but using a novel pulsed microwiggler of 0.5-cm period capable of generating a peak field of several tesla. We plan to lase on a fundamental wavelength of ∼ 0.8 μm and on the third harmonic at 0.25 μm.