D. R. Yakovlev

V. I. Belotelov; I. A. Akimov; M. Pohl; V.A. Kotov; Sachin Arvind Kasture; A.S. Vengurlekar; Achanta Venu Gopal; D. R. Yakovlev; A. K. Zvezdin; M. Bayer

Plasmonics allows light to be localized on length scales much shorter than its wavelength, which makes it possible to integrate photonics and electronics on the nanoscale. Magneto-optical materials are appealing for applications in plasmonics because they open up the possibility of using external magnetic fields in plasmonic devices. Here, we fabricate a new magneto-optical material, a magnetoplasmonic crystal, that consists of a nanostructured noble-metal film on top of a ferromagnetic dielectric, and we demonstrate an enhanced Kerr effect with this material. Such magnetoplasmonic crystals could have applications in telecommunications, magnetic field sensing and all-optical magnetic data storage.

V. I. Belotelov; Lars E. Kreilkamp; I. A. Akimov; A. N. Kalish; Dmitry A. Bykov; Sachin Arvind Kasture; V. J. Yallapragada; Achanta Venu Gopal; Alexander M. Grishin; Sergiy Khartsev; Mohammad Nur-E-Alam; Mikhail Vasiliev; Leonid L. Doskolovich; D. R. Yakovlev; Kamal Alameh; A. K. Zvezdin; M. Bayer

Magnetic field control of light is among the most intriguing methods for modulation of light intensity and polarization on sub-nanosecond timescales. The implementation in nanostructured hybrid materials provides a remarkable increase of magneto-optical effects. However, so far only the enhancement of already known effects has been demonstrated in such materials. Here we postulate a novel magneto-optical phenomenon that originates solely from suitably designed nanostructured metal-dielectric material, the so-called magneto-plasmonic crystal. In this material, an incident light excites coupled plasmonic oscillations and a waveguide mode. An in-plane magnetic field allows excitation of an orthogonally polarized waveguide mode that modifies optical spectrum of the magneto-plasmonic crystal and increases its transparency. The experimentally achieved light intensity modulation reaches 24%. As the effect can potentially exceed 100%, it may have great importance for applied nanophotonics. Further, the effect allows manipulating and exciting waveguide modes by a magnetic field and light of proper polarization.

A. Greilich; Ruth Oulton; E. A. Zhukov; I. A. Yugova; D. R. Yakovlev; M. Bayer; A. Shabaev; Al. L. Efros; I. A. Merkulov; V. Stavarache; D. Reuter; Andreas D. Wieck

Electron spin coherence has been generated optically in n-type modulation doped (In,Ga)As/GaAs quantum dots (QDs) which contain on average a single electron per dot. The coherence arises from resonant excitation of the QDs by circularly polarized laser pulses, creating a coherent superposition of an electron and a trion. Time dependent Faraday rotation is used to probe the spin precession of the optically oriented electrons about a transverse magnetic field. The coherence generation can be controlled by pulse intensity, being most efficient for (2n+1)pi pulses.

I. A. Yugova; A. Greilich; D. R. Yakovlev; Andrey A. Kiselev; M. Bayer; V. V. Petrov; Yu. K. Dolgikh; D. Reuter; Andreas D. Wieck

The Zeeman splitting and the underlying

M. Pohl; Lars E. Kreilkamp; V. I. Belotelov; I. A. Akimov; A. N. Kalish; N.E. Khokhlov; V J Yallapragada; Achanta Venu Gopal; Mohammad Nur-E-Alam; Mikhail Vasiliev; D. R. Yakovlev; Kamal Alameh; A. K. Zvezdin; M. Bayer

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G. V. Astakhov; D. R. Yakovlev; V. P. Kochereshko; W. Ossau; W. Faschinger; J. Puls; F. Henneberger; S. A. Crooker; Q. McCulloch; Daniel Wolverson; N. A. Gippius; A. Waag

factor for conduction-band electrons in

Louis Biadala; Feng Liu; Mickael D. Tessier; D. R. Yakovlev; Benoit Dubertret; M. Bayer

\mathrm{Ga}\mathrm{As}∕{\mathrm{Al}}_{x}{\mathrm{Ga}}_{1\ensuremath{-}x}\mathrm{As}

E. A. Zhukov; D. R. Yakovlev; M. Bayer; M. M. Glazov; E. L. Ivchenko; G. Karczewski; T. Wojtowicz; J. Kossut

quantum wells have been measured by spin-beat spectroscopy based on a time-resolved Kerr rotation technique. The experimental data are plotted as functions of the lowest band-to-band optical transition energy, i.e., the effective band gap of the quantum wells. The model calculations suggest that in the tracked range of transition energies

Yan Li; Nikolai A. Sinitsyn; D. L. Smith; D. Reuter; Andreas D. Wieck; D. R. Yakovlev; M. Bayer; S. A. Crooker

E

G. V. Astakhov; A.V. Kimel; G. M. Schott; Artem Tsvetkov; Andrei Kirilyuk; D. R. Yakovlev; G. Karczewski; W. Ossau; G. Schmidt; L. W. Molenkamp; T.H.M. Rasing

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