[18a-WL2_201-1~10] 3.11 Nanoscale optical science and near-field optics

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-WL2_201-5] Engineering Visible–Near IR Thermal Emission by Mie Resonances of Silicon Nanospheres

〇(M1)Shintaro Kono¹, Tatsuya Onishi¹, Kana Kondo¹, Hiroshi Sugimoto¹, Minoru Fujii¹ (1.Kobe Univ.)

Keywords:

Mie resonance,silicon nanoparticle,thermal emission

Thermal radiation, based on Kirchhoff’s law, can be coherently controlled via optical modes by designing the absorption properties of materials. However, in the visible spectral range, thermal emission at practical temperatures lies in the exponentially decaying region of the blackbody spectrum, making wavelength-selective emission difficult to achieve. In this study, we laser-heat a single silicon spherical particle exhibiting Mie resonances in the visible to near-infrared range and observe narrowband thermal emission originating from magnetic multipole resonances. In the presentation, we demonstrate that the emission wavelength can be controlled by tuning the particle diameter.