Author/Authors :
Sajaev، نويسنده , , V and Huang، نويسنده , , Z and Biedron، نويسنده , , S.G and Den Hartog، نويسنده , , P.K and Gluskin، نويسنده , , E and Kim، نويسنده , , K.-J and Lewellen، نويسنده , , J.W. and Li، نويسنده , , Y and Makarov، نويسنده , , O and Milton، نويسنده , , S.V. and Moog، نويسنده , , E.R، نويسنده ,
Abstract :
We report on the first measurements of the dependence on the axial distance z of the spectrum of self-amplified spontaneous emission free-electron laser (SASE FEL) radiation. The measurements are performed under different FEL conditions in the wavelength range from 265 to 530 nm. Spectral measurements of the radiation at FEL saturation are included. The z-dependence of the radiation spectrum is compared with theory and simulations.
