All-optical switching of magnetoresistive devices using telecom-band femtosecond laser

Li He, Junyang Chen, Jianping Wang, Mo Li

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Ultrafast all-optical switching of the magnetization of various magnetic systems is an intriguing phenomenon that can have tremendous impact on information storage and processing. Here, we demonstrate all-optical switching of GdFeCo alloy films using a telecom-band femtosecond fiber laser. We further fabricate Hall cross devices and electrically readout all-optical switching by measuring anomalous Hall voltage changes. The use of a telecom laser and the demonstrated all-optical switching of magnetoresistive devices represent the first step toward integration of opto-magnetic devices with mainstream photonic devices to enable novel optical and spintronic functionalities.

Original languageEnglish (US)
Article number102402
JournalApplied Physics Letters
Issue number10
StatePublished - Sep 7 2015


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