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TY - CONF AU - Zhu, Y.P. AU - Li, H.T. AU - Zhao, Z. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Spectral Gap in the Middle Infrared FEL Oscillator of FELiCHEM J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - A phenomenon of spectral gap is observed in the Middle Infrared FEL Oscillator of FELiCHEM: the laser power falls down at the particular wavelength. Starting with the experimental data, this paper focuses on the simulation calculation and analysis of the effect from using the partial waveguide. The relationship between waveguide and spectral gap is revealed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1685 EP - 1687 KW - FEL KW - GUI KW - laser KW - electron KW - free-electron-laser DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-TUPAB126 UR - https://jacow.org/ipac2021/papers/tupab126.pdf ER -