Selective Excitation of Terahertz Magnetic and Electric Dipoles in Er3+ Ions by Femtosecond Laser Pulses in ErFeO3

Autor:	Mikhaylovskiy, R., Huisman, T.J., Pisarev, R.V, Rasing, T.H.M., Kimel, A.V.
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	Spectroscopy of Solids and Interfaces Physics::Optics GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries)
Zdroj:	Physical Review Letters, 118, 1-6 Physical Review Letters, 118, 1, pp. 1-6
ISSN:	0031-9007
Popis:	We show that femtosecond laser pulse excitation of the orthoferrite ErFeO3 triggers pico- and subpicosecond dynamics of magnetic and electric dipoles associated with the low energy electronic states of the Er3+ ions. These dynamics are readily revealed by using polarization sensitive terahertz emission spectroscopy. It is shown that by changing the polarization of the femtosecond laser pulse one can excite either electric dipole-active or magnetic dipole-active transitions between the Kramers doublets of the 4I15/2 ground state of the Er3+(4f11) ions. These observations serve as a proof of principle of polarization-selective control of both electric and magnetic degrees of freedom at terahertz frequencies, opening up new vistas for optical manipulation of magnetoelectric materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b0b34782000610e1a2af722aa9dbf2d4 https://doi.org/10.1103/PhysRevLett.118.017205 Zobrazit plný text záznamu