Transient grating generation of ultrafast surface magneto-elastic waves

Chia-Lin Chang; Julius Janušonis; Vladimir M. Vlasov; Alexey M. Lomonosov; Vasily V. Temnov; Ra'anan I. Tobey

doi:10.1117/12.2239110

26 September 2016 Transient grating generation of ultrafast surface magneto-elastic waves

Chia-Lin Chang, Julius Janušonis, Vladimir M. Vlasov, Alexey M. Lomonosov, Vasily V. Temnov, Ra'anan I. Tobey

Proceedings Volume 9931, Spintronics IX; 99312V (2016) https://doi.org/10.1117/12.2239110
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

We present a simple experimental approach to generating and detecting surface-propagating magneto-elastic waves. Using the ultrafast optical transient grating geometry, we drive in-plane propagating surface acoustic waves which couple to, and resonantly drive, magnetization precession in thin magnetic films. The optical approach provides for the real-time detection of both elastic wave transients as well as the tightly coupled magnetization precession in independent detection channels and thus reveals the tight coupling between the two when an appropriate magnetic field is applied. We discuss the experimental geometry and resulting linear magneto-elastic responses. We briefly touch upon nonlinear magnetoelastic properties, which is the focus of our current work.

Conference Presentation

Citation Download Citation

Chia-Lin Chang, Julius Janušonis, Vladimir M. Vlasov, Alexey M. Lomonosov, Vasily V. Temnov, and Ra'anan I. Tobey "Transient grating generation of ultrafast surface magneto-elastic waves", Proc. SPIE 9931, Spintronics IX, 99312V (26 September 2016); https://doi.org/10.1117/12.2239110

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