[13a-N107-1~12] 3.1 Basic optics and frontier of optics

[13a-N107-7] Study of electron lens action created by a tightly focused vector beam

〇Yuuki Uesugi^1,2, Yuichi Kozawa¹, Shunichi Sato¹ (1.Tohoku Univ., 2.PRESTO, JST)

Keywords:Ponderomotive potential, Vector beam, Electron lens

We show through numerical simulations that the ponderomotive potential provided by a tightly focused cylindrically symmetric laser field can function as a round lens for an electron beam. To maximize the interaction between light and electrons based on stimulated Compton scattering, we considered tightly focusing an annular beam with radial/azimuthal polarization by a high NA objective. We evaluated the characteristics of the realized round lens action and found that it has a remarkable feature of negative spherical aberration.