4.1.5 Optical and magnetooptical properties

Ultrafast Demagnetization of Iron Induced by Optical versus Terahertz Pulses

“…We, therefore, choose an optimum thickness 𝑑 of 8 nm. In contrast, BiIG has a 1 order of magnitude smaller |𝑄| ∼ 10 −3 , but 3 orders of magnitude smaller absorption coefficient and less reflection losses than Fe [34]. At the same time, phonon resonances in the garnet can distort and attenuate the THz pulse [35].…”