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Phase-resolved measurement and control of ultrafast dynamics in terahertz electronic oscillators

Author

Listed:
  • Takashi Arikawa

    (Kyoto University
    Japan Science and Technology Agency (JST)
    University of Hyogo)

  • Jaeyong Kim

    (Ltd.
    ltd.)

  • Toshikazu Mukai

    (Ltd.)

  • Naoki Nishigami

    (Osaka University)

  • Masayuki Fujita

    (Osaka University)

  • Tadao Nagatsuma

    (Osaka University)

  • Koichiro Tanaka

    (Kyoto University
    Kyoto University)

Abstract

As a key component for next-generation wireless communications (6 G and beyond), terahertz (THz) electronic oscillators are being actively developed. Precise and dynamic phase control of ultrafast THz waveforms is essential for high-speed beam steering and high-capacity data transmission. However, measurement and control of such ultrafast dynamic process is beyond the scope of electronics due to the limited bandwidth of the electronic equipment. Here we surpass this limit by applying photonic technology. Using a femtosecond laser, we generate offset-free THz pulses to phase-lock the electronic oscillators based on resonant tunneling diode. This enables us to perform phase-resolved measurement of the emitted THz electric field waveform in time-domain with sub-cycle time resolution. Ultrafast dynamic response such as anti-phase locking behaviour is observed, which is distinct from in-phase stimulated emission observed in laser oscillators. We also show that the dynamics follows the universal synchronization theory for limit cycle oscillators. This provides a basic guideline for dynamic phase control of THz electronic oscillators, enabling many key performance indicators to be achieved in the new era of 6 G and beyond.

Suggested Citation

  • Takashi Arikawa & Jaeyong Kim & Toshikazu Mukai & Naoki Nishigami & Masayuki Fujita & Tadao Nagatsuma & Koichiro Tanaka, 2024. "Phase-resolved measurement and control of ultrafast dynamics in terahertz electronic oscillators," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48782-4
    DOI: 10.1038/s41467-024-48782-4
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    References listed on IDEAS

    as
    1. Mohammad Samizadeh Nikoo & Elison Matioli, 2023. "Electronic metadevices for terahertz applications," Nature, Nature, vol. 614(7948), pages 451-455, February.
    2. Dimitri Oustinov & Nathan Jukam & Rakchanok Rungsawang & Julien Madéo & Stefano Barbieri & Pascal Filloux & Carlo Sirtori & Xavier Marcadet & Jérôme Tignon & Sukhdeep Dhillon, 2010. "Phase seeding of a terahertz quantum cascade laser," Nature Communications, Nature, vol. 1(1), pages 1-6, December.
    3. Jianjun Ma & Rabi Shrestha & Jacob Adelberg & Chia-Yi Yeh & Zahed Hossain & Edward Knightly & Josep Miquel Jornet & Daniel M. Mittleman, 2018. "Security and eavesdropping in terahertz wireless links," Nature, Nature, vol. 563(7729), pages 89-93, November.
    4. Tomoki Hiraoka & Yuta Inose & Takashi Arikawa & Hiroshi Ito & Koichiro Tanaka, 2022. "Passive mode-locking and terahertz frequency comb generation in resonant-tunneling-diode oscillator," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
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