Presentation Information

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8a-A24-2]Modulation-Amplitude Dependence of Frequency-Modulated Spectra in Bi2212 Josephson Plasma Emitters

〇Keitarou Sugimoto¹, Masashi Miyamoto¹, Ryota Kobayashi¹, Manabu Tsujimoto², Itsuhiro Kakeya¹ (1.Graduate School of Engineering, Kyoto Univ., 2.AIST)

Keywords:

superconductivity,Terahertz

Josephson plasma emitter (JPE) based on a Bi2212 single crystal is a terahertz source whose emission frequency can be controlled by the applied voltage. In this study, we measured frequency-modulated spectra not only for the previously reported device but also for a newly fabricated device, and compared the changes in the maximum frequency deviation and peak spacing as a function of the modulation signal power. We confirmed common modulation-amplitude-dependent behavior in both devices and discuss the high-frequency modulation characteristics of JPE.

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