Switching the magnetization without any external applied magnetic field by using ultrashort circularly polarized laser pulses is a fascinating and challenging topic of modern magnetism. Up to now there is still no consensus about the microscopic mechanism of this so called all-optical switching (AOS)...
Ever since its discovery around a decade ago, all-optical magnetization switching (AOS) using femtosecond laser pulses has shown potential for future data storage and logic devices. In particular, single pulse helicity independent AOS in certain ferrimagnetic alloys and multilayers is highly efficient ...
Energy-efficient control of magnetization without the help of a magnetic field is a key goal of spintronics. Purely heat-induced single-pulse all-optical toggle switching has been demonstrated, but so far only in Gd based amorphous ferrimagnet films. In this work, we demonstrate toggle switching...
They resonate with the optical field and create a field enhancement in its vicinity, which is used to confine the area where optical switching can occur. It is demonstrated that single femtosecond optical laser pulses can reverse magnetization in a controllable fashion by such confinement. The ...
This focusing of the electric field lines means that the electric field lines have a strong component in the plane of the disk along the sides of the island, which enables all-optical switching of the magnetization of the island 130c by the IFE. FIG. 5B shows an embodiment of the near-...
Our results show that the quantum dot-nanocavity system enables fast, controllable optical switching at the single-photon level.关键词: all-optical switch photonic crystal cavity quantum dot 会议名称: SPIE Conference on Advances in Photonics of Quantum Computing, Memory, and Communication ...
All-Optical Fiber-Cantilever Beam-Deflection Magnetometer: Detection of Low Magnetic Field and Magnetization Measurement All-optical fiber-cantilever beam deflection configuration using an optimized composition of cobalt doped nickel ferrite nanoparticles coated single-mode optical fiber cantilevers is demonstrate...
We propose a method for high-density all-optical magnetic recording. Our analyses, based on the vector diffraction theory, show that owing to the inverse Faraday effect, circularly polarized laser pulses focused by a high numerical aperture (NA) lens can induce a small magnetization domain. For ...
All-optical switching (AOS) of magnetic materials describes the reversal of the magnetization using short (femtosecond) laser pulses, and received extensive attention in the past decade due to its high potential for fast and energy-efficient data writing in future spintronic memory applications. Unfort...
All-Optical Switching (AOS) scheme and time evolution of magnetization. (a) Illustration of AOS. Laser pulses heat up the magnetic material, and the induced magnetic field arising from inverse Faraday effect (IFE), which can either flip or preserve the final magnetization depending on the helicit...