Numerical studies of resonators with on-axis holes in mirrors for FEL applications

M. Keselbrener, S. Ruschin, B. Lissak, A. Gover

Research output: Contribution to journalConference articlepeer-review


An optical resonator with holes on-axis for applications in an FEL oscillator was recently proposed by Pantell et al. These authors presented an analytical approach based on approximating the field inside the resonator by a truncated expansion in Gauss-Laguerre modes. We perform further investigation of this configuration by using a Fox and Li type code which was recently applied to the analysis of a laser resonator with internal circular aperture. This numerical approach allows us to check the range of validity of Pantell's solutions, the parameters for which they constitute the lowest-loss mode and to map the transverse profile of the mode at different planes inside the resonator.

Original languageEnglish
Pages (from-to)38-47
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1991
EventModeling and Simulation of Laser Systems II - Los Angeles, CA, USA
Duration: 23 Jan 199124 Jan 1991


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