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We report the observation of enhanced magneto-optic rotation as the coherent superposition of different hyperfine states is established in an atomic sample. The polarization rotation near the two photon Raman resonance condition appears to…

Optics · Physics 2012-04-16 S. Pradhan , A. Kani , Harshawardhan Wanare , R. Behera , A. K. Das

The magneto-optical effect breaks time-reversal symmetry, a unique property that makes it indispensable in nonreciprocal optics and topological photonics. Unfortunately, all natural materials have a rather weak magneto-optical response in…

Optics · Physics 2018-09-24 Lei Ying , Ming Zhou , Xiaoguang Luo , Jingfeng Liu , Zongfu Yu

The peculiarities of coherent spin radiation by magnetic nanomolecules is investigated by means of numerical simulation. The consideration is based on a microscopic Hamiltonian taking into account realistic dipole interactions.…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 V. I. Yukalov , V. K. Henner , P. V. Kharebov , E. P. Yukalova

We show that nonlinear multipolar interference allows achieving not only unidirectional, but also non-reciprocal nonlinear generation from a nanoelement, with the direction of the nonlinearly produced light decoupled from that of at least…

Optics · Physics 2015-10-13 Ekaterina Poutrina , Augustine Urbas

The ability to control the speed and polarisation of light pulses will allow for faster data flow in optical networks of the future. Optical delay and switching have been achieved using slow-light techniques in various media, including…

Atomic Physics · Physics 2009-04-08 Paul Siddons , Nia C Bell , Yifei Cai , Charles S Adams , Ifan G Hughes

We demonstrate the quantitative measurement of the magnetization of individual magnetic nanoparticles (MNP) using a magnetic force microscope (MFM). The quantitative measurement is realized by calibration of the MFM signal using an MNP…

Mesoscale and Nanoscale Physics · Physics 2010-02-22 Kai-Felix Braun , Sibylle Sievers , Dietmar Eberbeck , Stefan Gustafsson , Eva Olsson , Hans Werner Schumacher , Uwe Siegner

We study the interaction of a weak probe field, having two orthogonally polarized components, with an optically dense medium of four-level atoms in a tripod configuration. In the presence of a coherent driving laser, electromagnetically…

Quantum Physics · Physics 2007-05-23 David Petrosyan , Yuri P. Malakyan

The magneto-optic Voigt effect is observed in a synthetic diamond membrane with a substitutional nitrogen defect concentration in the order of 200 ppm and a nitrogen-vacancy defect sub-ensemble generated through neutron irradiation and…

Mesoscale and Nanoscale Physics · Physics 2020-04-07 Haitham A. R. El-Ella , Kristian H. Rasmussen , Alexander Huck , Ulrik L. Andersen , Ilya P. Radko

Light-matter interactions are frequently perceived as predominantly influenced by the electric optical field, with the magnetic component of light often overlooked. Nonetheless, the magnetic aspect plays a pivotal role in various optical…

We report on experimental and theoretical study of the nonlinear Faraday effect under conditions of electromagnetically induced transparency at the 5$S_{1/2} \to 5P_{3/2} \to 5D_{5/2}$ two-photon transition in rubidium vapors. These…

Optics · Physics 2015-05-13 R. Drampyan , S. Pustelny , W. Gawlik

The thermodynamics of irreversible processes in continuous media predicts the existence of a Magnetic Nernst effect that results from a magnetic analog to the Seebeck effect in a ferromagnet and magnetophoresis occurring in a paramagnetic…

Mesoscale and Nanoscale Physics · Physics 2016-01-20 Sylvain D. Brechet , Jean-Philippe Ansermet

Circularly polarized optical excitation of plasmonic nanostructures causes coherent circulating motion of their electrons, which in turn, gives rise to strong optically induced magnetization - a phenomenon known as the inverse Faraday…

Magnetic particle imaging (MPI) is an imaging method that can visualize magnetic nanoparticles in positive contrast, without radiation exposure. Recently, we proposed an image reconstruction method for projection-based MPI (pMPI), in which…

Medical Physics · Physics 2023-05-01 Kenya Murase

Nonlinear magneto-optical rotation is a sensitive technique for measuring magnetic fields. Here, the shot-noise-limited magnetometric sensitivity is analyzed for the case of optically-thick media and high light power, which has been the…

Atomic Physics · Physics 2009-11-07 S. M. Rochester , D. Budker

Dynamic nuclear polarization (DNP) has revolutionized the field of NMR spectroscopy, expanding its reach and capabilities to investigate diverse materials, biomolecules, and complex dynamic processes. Bringing high-efficiency DNP to the…

Mesoscale and Nanoscale Physics · Physics 2024-02-27 Sahand Tabatabaei , Pritam Priyadarsi , Namanish Singh , Pardis Sahafi , Daniel Tay , Andrew Jordan , Raffi Budakian

The observation of anomalously large polarization rotations in pump-probe experiments with circularly polarized light has recently challenged the conventional understanding of the inverse Faraday effect. The striking magnitude of these…

Materials Science · Physics 2026-05-27 Niccolò Sellati , Jacopo Fiore , Lara Benfatto

In this letter we report a direct observation of a magnetic proximity effect in an amorphous thin film exchange-spring magnet by the use of neutron reflectometry. The exchange-spring magnet is a trilayer consisting of two ferromagnetic…

Materials Science · Physics 2020-10-14 A. J. Qviller , F. Magnus , B. J. Kirby , B. Hjörvarsson , C. Frommen , B. C. Hauback

Interferometric-based microscopies stand as powerful label-free approaches for monitoring and characterising chemical reactions and heterogeneous nanoparticle systems in real time with single particle sensitivity. Nevertheless, coherent…

Two-dimensional double nanoparticles (DNPs) arrays are demonstrated theoretically supporting the interaction of out-of-plane magnetic plasmons and in-plane lattice resonances, which can be achieved by tuning the nanoparticle height or the…

Optics · Physics 2014-06-04 Pei Ding , Junqiao Wang , Jinna He , Chunzhen Fan , Genwang Cai , Erjun Liang

Magnetic nanoparticle-based hyperthermia has emerged as a promising therapeutic modality for treating malignant solid tumors that exhibit resistance to conventional cancer treatments, including chemotherapy and radiation. Despite the…

Mesoscale and Nanoscale Physics · Physics 2024-08-21 S. Scheibler , H. Wei , J. Ackers , S. Helbig , S. Koraltan , R. Peremadathil-Pradeep , M. Krupiński , M. Graeser , D. Suess , I. K. Herrmann , H. J. Hug