Mirror aberrations in a low gain FEL oscillator

P. J.M. Van Der Slot, H. P. Freund, R. Van Der Meer, K. J. Boller

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)


To generate radiation with high spatial - and temporal quality in free-electron lasers (FELs), oscillators are to be used which are based on the combination of low gain with a large number of roundtrips in a low-loss optical resonator. Clearly, in this situation any additional loss or aberration may seriously degrade the performance and beam quality, and this becomes extremely important for high average power FEL oscillators. Nevertheless, so far no systematic study has been made how various mirror aberrations affect the performance of such low gain FEL oscillators. Here we present the first results of such a study. The approach is based on the optical propagation code OPC with GENESIS 1.3 and MEDUSA as gain codes.

Original languageEnglish
Number of pages4
Publication statusPublished - 1 Dec 2008
Event30th International Free Electron Laser Conference, FEL 2008 - Gyeongju, Korea, Republic of
Duration: 24 Aug 200829 Aug 2008
Conference number: 30


Conference30th International Free Electron Laser Conference, FEL 2008
Abbreviated titleFEL
CountryKorea, Republic of

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