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Alwyn J Seeds, Martyn J Fice, Katarzyna Balakier

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    Photonic local oscillators enable highly coherent and sensitive terahertz (THz) systems. These energy-efficient integrated platforms unlock the full application potential of the THz spectrum.

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    Area of Science:

    • Optoelectronics
    • Terahertz (THz) technology
    • Integrated photonics

    Background:

    • Terahertz (THz) frequencies (100 GHz–5 THz) offer unique sensing and communication capabilities.
    • Realizing the full potential of THz applications requires highly coherent and sensitive systems.
    • Current THz systems face challenges in terms of coherence, sensitivity, and energy efficiency.

    Purpose of the Study:

    • To review recent advancements in THz coherent systems utilizing photonic local oscillators.
    • To highlight the potential of photonics-enabled THz systems for diverse applications.
    • To demonstrate the feasibility of integrated, energy-efficient THz platforms.

    Main Methods:

    • Review of key photonic components for THz generation and detection.
    • Analysis of recent demonstrations of integrated photonic THz systems.
    • Exploration of application examples enabled by these advanced THz systems.

    Main Results:

    • Photonic local oscillator techniques facilitate the creation of highly coherent THz systems.
    • These systems achieve high sensitivity across the 100 GHz to 5 THz range.
    • Energy-efficient integrated platforms are demonstrated for THz applications.

    Conclusions:

    • Photonics-enabled THz systems are crucial for unlocking the THz spectrum's application potential.
    • Integrated photonic platforms offer a pathway to sensitive, coherent, and energy-efficient THz solutions.
    • Further development in this area promises significant advancements in THz science and technology.