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X-ray laser pulses at the Fourier transform limit

By G.J. Tallents, M.H. Edwards and P. Mistry

Abstract

The temporal output of a Ni-like Ag x-ray laser of wavelength 13.9 nm has been recorded using a streak camera with ultrashort (700 fs) temporal resolution. We present a model to calculate the degree of coherence and Fourier transform limit of x-ray laser pulses produced by amplified spontaneous emission and relate the results from the model to previous interferometric measurements of the coherence length of the same Ni-like Ag x-ray laser and our measured duration of temporal output. Our modeling shows that the interferometer and streak camera results are consistent and close to the Fourier transform limit at longer gain medium lengths

Year: 2007
DOI identifier: 10.1103/PhysRevA.75.013818
OAI identifier: oai:eprints.whiterose.ac.uk:2437

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