Measurement of transient strain induced by two-photon excitation
Steffen Peer Zeuschner, Jan‐Etienne Pudell, A. von Reppert, Marwan Deb, E. Popova, N. Keller, Matthias Rössle, Marc Herzog, Matias Bargheer
Abstract
This paper quantifies the lattice expansion of an insulator upon two photon excitation. The ultrafast x-ray diffraction experiments measure a clean quadratic dependence of the strain on the laser fluency and prove that the pulse intensity is the relevant quantity, as the signal is anti-proportional to the pulse duration. The investigated material Bi:YIG is the standard material for magnonics, where ultrashort laser-pulses can create spin-waves via various mechanisms, including strain modulation of the anisotropy
Topics & Concepts
Transient (computer programming)ExcitationStrain (injury)PhysicsPhotonAtomic physicsOpticsComputer scienceQuantum mechanicsMedicineInternal medicineOperating systemMagneto-Optical Properties and ApplicationsSurface Roughness and Optical MeasurementsMagnetic Properties and Applications