[17p-WL2_201-1~16] 3.11 Nanoscale optical science and near-field optics

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17p-WL2_201-10] Optical metasurfaces fabricated via laser-induced patterning of Tellurium optic axis

〇(M1)Takuto Hiraoka¹, Arata Mitsuzuka¹, Yuta Kobayashi¹, Mizuho Matoba², Masashi Kawaguchi¹, Kuniaki Konishi^1,2, Masamitsu Hayashi¹ (1.Dept. Phys., Univ. Tokyo, 2.IPST, Univ. Tokyo)

Keywords:

metasurface,tellurium,birefringence

Phase control of light using subwavelength-scale elements is a key requirement for developing metasurface functionalities. In this presentation, we report a new approach that does not rely on standard nanofabrication: using a pulse laser to pattern the uniaxial dielectric anisotropy axis of a tellurium thin film. We compare the measured optical properties of laser-fabricated metasurface with electromagnetic simulations performed in COMSOL, and found that the patterned devices exhibit properties as designed. We discuss the advantages and remaining challenges of the proposed method.