Title: Magnetic resonance of rubidium atoms passing through a multi-layered transmission magnetic grating,
Abstract: We measured the magnetic resonance of rubidium atoms passing through periodic
magnetic fields generated by two types of multilayered transmission magnetic
grating. One of the gratings reported here was assembled by stacking four
layers of magnetic films so that the direction of magnetization alternated at
each level. The other grating was assembled so that the magnetization at each
level was aligned. For both types of grating, the experimental results were in
good agreement with our calculations. We studied the feasibility of extending
the frequency band of the grating and narrowing its resonance linewidth by
performing calculations. For magnetic resonance precision spectroscopy, we
conclude that the multi-layered transmission magnetic grating can generate
periodic fields with narrower linewidths at higher frequencies when a larger
number of layers is assembled at a shorter period length. Moreover, the
frequency band of this type of grating can potentially achieve frequencies of
up to hundreds of PHz.