Fig. 4: Temporal profile of exchange stiffness Aex for various fluence.
From: Ultrafast dynamics of exchange stiffness in Co/Pt multilayer

a wavelength of pump pulse λpump = 800 nm. b λpump = 400 nm.
From: Ultrafast dynamics of exchange stiffness in Co/Pt multilayer
a wavelength of pump pulse λpump = 800 nm. b λpump = 400 nm.