Spin-dependent two-photon Bragg scattering in the Kapitza-Dirac effect

10 Sep 2020  ·  Ahrens Sven, Liang Zhenfeng, Cadez Tilen, Shen Baifei ·

We present the possibility of spin-dependent Kapitza-Dirac scattering based on a two-photon interaction only. The interaction scheme is inspired from a Compton scattering process, for which we explicitly show the mathematical correspondence to the spin-dynamics of an electron diffraction process in a standing light wave... The spin effect has the advantage that it already appears in a Bragg scattering setup with arbitrary low field amplitudes, for which we have estimated the diffraction count rate in a realistic experimental setup at available X-ray free-electron laser facilities. read more

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