[15p-K305-1~14] 3.1 Basic optics and frontier of optics

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[15p-K305-13] Asymmetrical Frequency Up-/Down-conversion by Time-varying Magnetic Metamaterials

〇(PC)Toshiyuki Kodama¹, Takahiro Chiba², Nobuaki Kikuchi³, Satoshi Okamoto^4,5, Seigo Ohno⁶, Satoshi Tomita^1,6 (1.IEHE, Tohoku Univ., 2.FRIS, Tohoku Univ., 3.Akita Univ., 4.IMRAM, Tohoku Univ., 5.CSIS, Tohoku Univ., 6.Dept. of Phys., Tohoku Univ.)

Keywords:

Metamaterial,Time-varying,Frequency conversion

Time-varying metamaterials, in which the refractive index changes in the time domain, have attracted attention. We have realized permeability time-varying metamaterials by controlling the permeability of ferromagnetic materials. In time-varying metamaterials, frequencies are converted upward and downward. In this talk, we will report on a unique phenomenon in permeability modulation in which the intensity of up-conversion is larger than that of down-conversion.