[20p-P1-1~8] 3.1 Basic optics and frontier of optics

[20p-P1-8] Fundamental Study on Control of Particles for Production of Random Laser Medium

〇Naomichi Yokoi¹, Takashi Okamoto², Yoshihisa Aizu³ (1.Nat. Inst. Tech., Asahikawa Col., 2.Kyushu Inst. Tech., 3.Muroran Inst. Tech.)

Keywords:laser trapping, speckle, random laser

Optical trapping and guiding of particles are the tremendous requirements in various fields of industry. We have numerically investigated so far the motion of a Brownian particle suspended in still water under the illumination of a speckle pattern generated by the interference of coherent light scattered by a rough object. In the present study, we investigate numerically the motion of a titanium dioxide particle in a photo-curing resin under the illumination of a speckle pattern. Trajectory of the particle is simulated in relation to its size and, power and diameter of the speckle to confirm the feasibility of the present method for performing optical trapping and guiding of the particle in the photo-curing resin. The present method is expected to be applied to the production of random laser medium.