Generation of intense, polarization-controlled magnetic fields with non-paraxial structured laser beams
Abstract: The ability to spatially separate the electric and magnetic fields of a light beam enables the inspection of laser-matter interactions driven solely by optical magnetic fields. However, magnetic field excitations are commonly orders of magnitude weaker than those driven by the electric field. Several studies have already demonstrated the isolation of an intense, linearly polarized magnetic field using structured light. In this work, we report the generation of isolated high intensity magnetic fields with controlled polarization state in the non-paraxial regime using structured laser beams. Our theoretical findings highlight a significant enhancement in the amplitude of the longitudinal magnetic field carried by an azimuthally polarized laser under tight-focusing conditions. Furthermore, by implementing a multiple-beam configuration, we achieve precise control over the polarization state and amplitude of the spatially isolated magnetic field. We report the generation of polarization-controlled magnetic fields reaching up to tens of Tesla, even from moderately intense laser beams of $\sim 10{12} \, \mathrm{W}/\mathrm{cm}2$. Our study paves the way for ultraintense interactions with circularly polarized magnetic fields from a feasible experimental setup point of view, particularly interesting to probe ferromagnetic materials and chiral media.
- L. M. Burko, Transversality of electromagnetic waves in the calculus-based introductory physics course, European Journal of Physics 29, 1223 (2008).
- A. Forbes, Structured Light from Lasers, Laser & Photonics Reviews 13, 1900140 (2019).
- C. He, Y. Shen, and A. Forbes, Towards higher-dimensional structured light, Light Sci. Appl. 11, 205 (2022).
- H. Kogelnik and T. Li, Laser Beams and Resonators, Appl. Opt. 5, 1550 (1966).
- M. A. Bandres and J. C. Gutiérrez-Vega, Ince–Gaussian beams, Opt. Lett. 29, 144 (2004).
- D. G. Hall, Vector-beam solutions of Maxwell’s wave equation, Opt. Lett. 21, 9 (1996).
- Y. I. Salamin, Direct particle acceleration by two identical crossed radially polarized laser beams, Phys. Rev. A 82, 013823 (2010).
- J. Wätzel, C. M. Granados-Castro, and J. Berakdar, Magnetoelectric response of quantum structures driven by optical vector beams, Phys. Rev. B 99, 085425 (2019).
- M. Veysi, C. Guclu, and F. Capolino, Focused azimuthally polarized vector beam and spatial magnetic resolution below the diffraction limit, J. Opt. Soc. Am. B: Opt. Phys. 33, 2265 (2016).
- P. Woźniak and P. Banzer, Single nanoparticle real and k-space spectroscopy with structured light, New J. Phys. 23, 103013 (2021).
- S. Sederberg, F. Kong, and P. B. Corkum, Tesla-Scale Terahertz Magnetic Impulses, Phys. Rev. X 10, 11063 (2020).
- S.-W. Cheong and X. Xu, Magnetic chirality, npj Quantum Materials 7, 40 (2022).
- Y. Tang and A. E. Cohen, Optical chirality and its interaction with matter, Phys. Rev. Lett. 104, 163901 (2010).
- E. Wolf, Electromagnetic diffraction in optical systems-i. an integral representation of the image field, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences 253, 349 (1959).
- B. Richards and E. Wolf, Electromagnetic diffraction in optical systems, ii. structure of the image field in an aplanatic system, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences 253, 358 (1959).
- M. Veysi, C. Guclu, and F. Capolino, Vortex beams with strong longitudinally polarized magnetic field and their generation by using metasurfaces, J. Opt. Soc. Am. B 32, 345 (2015).
- Q. Zhan, Cylindrical vector beams: from mathematical concepts to applications, Adv. Opt. Photon. 1, 1 (2009).
- M. A. Alonso, Geometric descriptions for the polarization of nonparaxial light: a tutorial, Adv. Opt. Photon. 15, 176 (2023).
- M. V. Berry, Optical currents, Journal of Optics A: Pure and Applied Optics 11, 94001 (2009).
- Z. Xi and H. P. Urbach, Magnetic dipole scattering from metallic nanowire for ultrasensitive deflection sensing, Phys. Rev. Lett. 119, 053902 (2017).
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