Extended Data Fig. 6: Domain structures after demagnetization.

The images of magnetic domain structures before the laser excitation (a), after irradiation at pump wavelength 17 μm with fluence 1.2 J·cm−2. (b) and the image of sample damage after irradiation with fluence 2.5 J·cm−2. The difference images between before and after irradiation with fluence 0.3 J·cm−2 (d), 0.7 J·cm−2 (e) 1.2 J·cm−2 (f). The laser spot was marked by red dashed circle. The white arrows are marked the crystallographic axes in the YIG film.