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

[12p-N107-1] Rotational control of light intensity distribution via Gouy phase of radial-mode Laguerre-Gaussian beam

〇Hirokazu Kobayashi¹, Kosuke Yokogawa¹, Katsushi Iwashita¹ (1.Kochi Univ. Tech.)

Keywords:optical vortex, Gouy phase, radial mode

An optical beam whose intensity distribution is rotating under propagation makes it possible to measure velocity of small particles passing through the beam and the rotational control of small particles via light pressure. In this study, we report the rotational control of intensity distribution under propagation by adjusting the difference of Gouy phase between the fundamental Gaussian beam and the higher-order LG beam with radial mode.