Cover Feature: Excitation of Spin Waves in Ferrimagnetic Alloy via Optical Transient Grating Spectroscopy (Adv. Photonics Res. 2/2026)

Key Points

• The aim is to explore an effective method for exciting dipolar spin waves in ferrimagnetic thin films.
• Utilized optical transient grating spectroscopy to excite spin waves.
• Focused on separating magnons from phonons in measurements.
• Controlled the wave vector during excitation.
• Demonstrated successful excitation of standing dipolar spin waves.
• Highlighted the potential applications for multiscale magnonics.