Short wavelength regenerative amplifier free electron lasers
D. J. Dunning, B. W. J. McNeil, N.R.Thompson
TL;DR
This paper explores extending regenerative amplifier free electron lasers to shorter wavelengths, including XUV, by using simulation studies to achieve good temporal coherence despite low broadband optical reflectivity.
Contribution
It introduces methods to operate regenerative amplifier FELs at shorter wavelengths, overcoming optical reflectivity challenges with broadband feedback simulations.
Findings
Achieved good temporal coherence in simulations at XUV wavelengths.
Demonstrated feasibility of extending FEL wavelength range beyond current limits.
Provided insights into optical feedback requirements for short-wavelength FELs.
Abstract
In this paper we discuss extending the operating wavelength range of tunable Regenerative Amplifier FELs to shorter wavelengths than current design proposals, notably into the XUV regions of the spectrum and beyond where the reflectivity of broadband optics is very low. Simulation studies are presented which demonstrate the development of good temporal coherence in generic systems with a broadband radiation feedback of less than one part in ten thousand.
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