Generation of terahertz signal by photomixing Kelly sidebands of mode-locking fiber laser

Weiqian Zhao; Chun Yang; Mingya Shen; Weijie Xu

doi:10.1117/12.2589120

18 April 2021 Generation of terahertz signal by photomixing Kelly sidebands of mode-locking fiber laser

Weiqian Zhao, Chun Yang, Mingya Shen, Weijie Xu

Proceedings Volume 11770, Nonlinear Optics and Applications XII; 117700K (2021) https://doi.org/10.1117/12.2589120
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Abstract

We investigate the photomixing Kelly sidebands of soliton mode-locking fiber laser to generate the Terahertz (THz) signal. A simulation model about soliton fiber laser with obvious ±1 order Kelly sidebands is built up to design the sidebands with strong intensity, narrow bandwidth and adjustable spacing. It is found that the parameters of mode-locking fiber laser such as the total dispersion, filtering bandwidths, pump power of the laser play significant roles in determining the features of the ±1 order Kelly sidebands and the relationships between them are investigated. By photomixing the ±1 order sidebands, the experimental result shows that the desired THz signals with high optical-to-THz conversion are generated at frequencies of 0.187THz from the lab-made Yb-doped mode-locking fiber lasers. Well-designed Er-doped ring-cavity soliton fiber laser is used for obtaining THz signal of narrow linewidth with 1.35THz frequency tunable range.

Conference Presentation

Citation Download Citation

Weiqian Zhao, Chun Yang, Mingya Shen, and Weijie Xu "Generation of terahertz signal by photomixing Kelly sidebands of mode-locking fiber laser", Proc. SPIE 11770, Nonlinear Optics and Applications XII, 117700K (18 April 2021); https://doi.org/10.1117/12.2589120

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