Multi-Wavelength Terahertz Parametric Generator Using a Seed Laser Based on Four-Wave Mixing

DOI Web Site 22 References Open Access
  • Sota Mine
    Department of Electronics, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
  • Kodo Kawase
    Department of Electronics, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
  • Kosuke Murate
    Department of Electronics, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan

Description

<jats:p>In this study, we developed a multi-wavelength terahertz-wave parametric generator that operates with only one injection seeding laser. Tunable lasers used as an injection seeder must be single-frequency oscillators, and conventional multi-wavelength terahertz-wave parametric generator requires basically the same number of lasers as the number of wavelengths. In order to solve this problem, we developed a new external cavity semiconductor laser that incorporates a DMD in its wavelength-selective mechanism. In this process, stable multi-wavelength oscillation from a single laser was made possible by efficiently causing four-wave mixing. This seed laser can be applied to practical real-time terahertz spectroscopy by arbitrarily switching the desired wavelength to be generated and the interval between multiple wavelengths.</jats:p>

Journal

  • Photonics

    Photonics 9 (4), 258-, 2022-04-12

    MDPI AG

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