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Passive mode-locking and terahertz frequency comb generation in resonant-tunneling-diode oscillator

Author

Listed:
  • Tomoki Hiraoka

    (Graduate School of Science, Kyoto University)

  • Yuta Inose

    (Graduate School of Science, Kyoto University)

  • Takashi Arikawa

    (Graduate School of Science, Kyoto University
    PRESTO, Japan Science and Technology Agency (JST))

  • Hiroshi Ito

    (Kitasato University)

  • Koichiro Tanaka

    (Graduate School of Science, Kyoto University)

Abstract

Optical frequency combs in the terahertz frequency range are long-awaited frequency standards for spectroscopy of molecules and high-speed wireless communications. However, a terahertz frequency comb based on a low-cost, energy-efficient, and room-temperature-operating device remains unavailable especially in the frequency range of 0.1 to 3 THz. In this paper, we show that the resonant-tunneling-diode (RTD) oscillator can be passively mode-locked by optical feedback and generate a terahertz frequency comb. The standard deviation of the spacing between the comb lines, i.e., the repetition frequency, is reduced to less than 420 mHz by applying external bias modulation. A simulation model successfully reproduces the mode-locking behavior by including the nonlinear capacitance of RTD and multiple optical feedback. Since the mode-locked RTD oscillator is a simple semiconductor device that operates at room temperature and covers the frequency range of 0.1 to 2 THz (potentially up to 3 THz), it can be used as a frequency standard for future terahertz sensing and wireless communications.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31071-3
    DOI: 10.1038/s41467-022-31071-3
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    References listed on IDEAS

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    1. Quanyong Lu & Feihu Wang & Donghai Wu & Steven Slivken & Manijeh Razeghi, 2019. "Room temperature terahertz semiconductor frequency comb," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
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    Cited by:

    1. 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.

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