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2021•Unpublished venueRequires access

Study of Generation and Detection of Continuous Terahertz Wave Using Chaotic Multi-mode Semiconductor Laser

Jiajun Li, Valynn Katrine Mag-usara, Verdad C. Agulto, I. Ohta, Fumiyoshi Kuwashima, Masashi Yoshimura, Makoto Nakajima

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Abstract

A 650-nm chaotically oscillating multi-mode semiconductor laser was used to generate and detect a stable continuous terahertz signal from a photoconductive antenna. The intensity of the generated terahertz was ~10 times stronger compared to the excitation without chaotic oscillations. The frequency comb-type spectrum is obtained in the sub-terahertz region, which makes terahertz time-domain spectroscopy systems with this kind of economically superior laser very promising for the evaluation of 5G and 6G components.

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What this paper is about

A 650-nm chaotically oscillating multi-mode semiconductor laser was used to generate and detect a stable continuous terahertz signal from a photoconductive antenna. The intensity of the generated terahertz was ~10 times stronger compared to the excitation without chaotic oscillations. The frequency comb-type spectrum is obtained in the sub-terahertz region, which makes terahertz time-domain spectroscopy systems with this kind of economically superior laser very promising for the evaluation of 5G and 6G components.

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Available abstract

A 650-nm chaotically oscillating multi-mode semiconductor laser was used to generate and detect a stable continuous terahertz signal from a photoconductive antenna. The intensity of the generated terahertz was ~10 times stronger compared to the excitation without chaotic oscillations. The frequency comb-type spectrum is obtained in the sub-terahertz region, which makes terahertz time-domain spectroscopy systems with this kind of economically superior laser very promising for the evaluation of 5G and 6G components.

Key concepts: Terahertz radiation, Photomixing, Terahertz gap, Laser, Terahertz time-domain spectroscopy, Semiconductor, Optoelectronics, Terahertz spectroscopy and technology

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