Zu diesem lizenzpflichtigen Artikel gibt es eine Open Access Version, die kostenlos und ohne Lizenzbeschränkung gelesen werden kann. Die Open Access Version kann inhaltlich von der lizenzpflichtigen Version abweichen.
Preisinformation
Bitte wählen Sie ihr Lieferland und ihre Kundengruppe
A numerical model of a multiple-grating interferometer is presented. The foundation of the model is an efficient algorithm that computes the propagation of a wave governed by the Helmholtz equation between two parallel planes in O(N log N) time, where N is the number of transverse sample points. The algorithm provides a large improvement in computational time over O(N2) brute-force approaches and has the advantage that the computational time increases linearly with the number of planes in the interferometer. The model is applied to a three-grating atom interferometer to calculate the loss of contrast in the interference signal as a function of longitudinal grating misposition and to investigate the effects of wide beam-collimating slits.