Hole Coupling Resonator for Free Electron Lasers

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The performance of two mirror resonators with holes for output coupling is studied for free electron laser application using a Fox-Li type code. The mode profiles inside and outside the cavity, the diffraction losses at the mirror edges and apertures, the amount of useful power coupled through the hole, e.t.c., are calculated for the dominant mode for different hole and mirror dimensions. It is found that resonators in near concenoic geometry can develop a mode degeneracy in certain cases, which should be avoided for the stability of the free electron laser gain and output. A resonator configuration for a free ... continued below

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Xie, M. & Kim, K.-J. November 1, 1990.

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The performance of two mirror resonators with holes for output coupling is studied for free electron laser application using a Fox-Li type code. The mode profiles inside and outside the cavity, the diffraction losses at the mirror edges and apertures, the amount of useful power coupled through the hole, e.t.c., are calculated for the dominant mode for different hole and mirror dimensions. It is found that resonators in near concenoic geometry can develop a mode degeneracy in certain cases, which should be avoided for the stability of the free electron laser gain and output. A resonator configuration for a free electron laser at Lawrence Berkeley Laboratory was found which can provide satisfactory performance over a wavelength range from 25 to 50 microns. The possibility of further increasing the tuning range by an adjustable intracavity aperture is discussed.

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  • Twelfth International Free Electron Laser Conference, Paris, France, September 17-21, 1990

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  • Report No.: LBL-29956-Conf
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 1001060
  • Archival Resource Key: ark:/67531/metadc834655

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Office of Scientific & Technical Information Technical Reports

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  • November 1, 1990

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • June 15, 2016, 8:33 p.m.

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Xie, M. & Kim, K.-J. Hole Coupling Resonator for Free Electron Lasers, article, November 1, 1990; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc834655/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.