Dual-comb spectroscopy in THz region using a single free-running dual-wavelength mode-locked fiber laser

Kazuki Nitta; Chen Jie; Tatsuya Mizuguchi; Guoqing Hu; Zheng Zheng; Takeshi Yasui

doi:10.1117/12.2500571

9 November 2018 Dual-comb spectroscopy in THz region using a single free-running dual-wavelength mode-locked fiber laser

Kazuki Nitta, Chen Jie, Tatsuya Mizuguchi, Guoqing Hu, Zheng Zheng, Takeshi Yasui

Author Affiliations +

Proceedings Volume 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V; 108260U (2018) https://doi.org/10.1117/12.2500571
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

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.

Citation Download Citation

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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