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9 November 2018 Dual-comb spectroscopy in THz region using a single free-running dual-wavelength mode-locked fiber laser
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Abstract
Terahertz dual-comb spectroscopy (THz-DCS) has the potential to be used as universal THz spectroscopy with high spectral resolution, high spectral accuracy, and broad spectral coverage; however, the requirement for dual stabilized femtosecond lasers hampers its versatility due to the bulky size, high complexity, and high cost. We here report the first demonstration of dual THz comb spectroscopy using a single free-running fiber laser. While greatly reducing the size, complexity, and cost of the laser source, THz-DCS maintains the spectroscopic performance comparable to a system equipped with dual stabilized fiber lasers, and can be effectively applied to gas spectroscopy.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kazuki Nitta, Chen Jie, Tatsuya Mizuguchi, Guoqing Hu, Zheng Zheng, and Takeshi Yasui "Dual-comb spectroscopy in THz region using a single free-running dual-wavelength mode-locked fiber laser", Proc. SPIE 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V, 108260U (9 November 2018); https://doi.org/10.1117/12.2500571
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