Observation of the transverse second-harmonic magneto-optic Kerr effect from Ni81Fe19 thin film structures

Crawford, T. M.; Rogers, Charles T.; Silva, Thomas J.; Kim, Y K.

doi:10.1063/1.115703

Cited by 32 publications

(9 citation statements)

References 12 publications

(19 reference statements)

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“…( 4), we plot in Fig. 3 the asymmetry as a function of the analyzer angle α with magnetization along [1][2][3][4][5][6][7][8][9][10] direction. We can rewrite the magnetic asymmetry as [7]:…”

Section: Resultsmentioning

confidence: 99%

“…The nonlinear magneto-optical Kerr effect is sensitive to surface and interface magnetization in centrosymmetric thin films [1,2] and multilayers [3] due to the fact that the crystallographic bulk contribution to second harmonic generation (SHG) is forbidden in centrosymmetric materials in electric dipole approximation. Moreover, the magnetization does not break the inversion symmetry in the bulk but can lower the surface and interface symmetry, leading to magnetization-induced SHG (MSHG) only from the latter [4].…”

Section: Introductionmentioning

confidence: 99%

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Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure

et al. 2006

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A large nonlinear magneto-optical effect is observed in a non-centrosymmetric Fe/AlGaAs (001) heterostructure. This effect is a direct consequence of interference between second-harmonic optical waves of magnetic and crystallographic origin, generated at ferromagnetic Fe interface and bulk AlGaAs, respectively. The longitudinal nonlinear Kerr rotation is measured to be 1.6 o along the [1-10] hard axis, about two orders of magnitude stronger than the linear equivalent. The rotational second-harmonic signal shows large magnetic contrast along all the in-plane directions, demonstrating a high sensitivity to the magnetization of an anisotropic interface in the longitudinal geometry.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure

et al. 2006

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“…These lasers offer more stable beam intensity and consequent improved measurement signal-to-noise ratio than their modelocked dye laser predecessors. With the routine availability of pulse widths as low as 30 fs or less, these lasers are also very attractive for the new imaging method of nonlinear magneto-optics [26,27,28,29,30]. Mode-locked argon ion lasers have been used in the past and are adequate for linear Kerr effect imaging if picosecond time resolution is not required [31].…”

Section: Pulsed Optical Sourcementioning

confidence: 99%

Stroboscopic Microscopy of Magnetic Dynamics

Freeman

Hiebert

Topics in Applied Physics

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Abstract. The enhanced capabilities of contemporary pulsed light sources have led to the reflourishing, in recent years, of ultrafast imaging of micromagnetic dynamics. Concurrently, interest in the subject has been intensified by other factors, such as the emergence of intrinsic magnetic response times as a potential limitation to the ultimate bandwidth of magnetic data storage and by increasingly powerful computer models of magnetic dynamics which call for experimental comparisons. This review contains a discussion of the experimental details behind ultrafast timeresolved magneto-optic imaging, sandwiched between a brief historical overview and a presentation of some recent results, and accompanied by an outline of some future prospects. Historical OverviewThe ongoing development of ultrafast laser technologies has made stroboscopic imaging of fast dynamics in microscopic structures very convenient. The stroboscopic, or "pump-probe" method as it is traditionally named by the optics community, has been grafted onto many different varieties of microscopy, including electron beam, scanning probe (force and tunneling), and, of course, optical (both conventional and near-field) [1,2,3,4]. Some applications of ultrafast optical microscopy are more fully developed than ultrafast scanning probe microscopies, many of which are still not too far beyond the "proof-of-principle" stage. This is largely because the development time for an ultrafast optical microscope is much shorter than that for combinations of ultrafast lasers with other imaging methods.Magnetic structures in particular have provided a major test bed for developments in ultrafast optical microscopy. The magneto-optic activity of ferromagnetic materials ideally suits them for this kind of experimental analysis. With characteristic relaxation times and oscillation periods ranging into the low picosecond range, and with domain wall widths and spin-wave wavelengths in the nanometer range, spatiotemporal investigation of these materials poses a difficult challenge for any type of microscopy. Ferroelectrics are another class with similar characteristics [5].As is often the case, the territory we explore now and find so fertile turns out to have been well surveyed by our predecessors, using the best tools of

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“…In order to fulfill the required phase-matching condition, often layered or periodically poled media are used. The first successful experiments with TSH have been conducted in 1-2 µm thick quantum wells waveguide structures [3][4][5][6][7]. The emission of TSH from these waveguides is frequently termed as the surface emitting second harmonic generation.…”

Section: Introductionmentioning

confidence: 99%

Transverse second-harmonic generation from disordered nonlinear crystals

Fischer

Saltiel²,

Neshev

et al. 2008

Open Physics

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Abstract:We investigate the transverse second-harmonic generation in as grown strontium barium niobate (SBN) crystals with a random structure of anti-parallel ferroelectric domains. We consider both, single and counterpropagating pulse geometries. We investigate polarization properties of the second harmonic signal and discuss applications of this process for short pulses characterization. PACS (2008):42.65.-k

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Observation of the transverse second-harmonic magneto-optic Kerr effect from Ni81Fe19 thin film structures

Cited by 32 publications

References 12 publications

Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure

Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure

Stroboscopic Microscopy of Magnetic Dynamics

Transverse second-harmonic generation from disordered nonlinear crystals

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