Spectral Range Broadening of Multimode-Laser-Driven Terahertz Spectroscopy System Using Two Laser Diodes

Yuanhao Zeng,Valynn Katrine Mag-usara,Verdad C. Agulto,Kosaku Kato,Masato Ota,Fumiyoshi Kuwashima,Masashi Yoshimura,Makoto Nakajima

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)（2023）

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摘要

We built a terahertz time-domain spectroscopy system that utilizes two continuous-wave multimode laser diodes with slightly different central wavelengths. We obtained intensified continuous terahertz waves using two multimode laser diodes compared with the case of only one laser diode. The spectral bandwidth of the generated THz wave extended up to 0.5 THz, which was broader than the 0.2 THz bandwidth obtained by 1 laser diode.

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关键词

continuous terahertz waves,continuous-wave multimode laser diodes,multimode-laser-driven terahertz spectroscopy system,spectral bandwidth,spectral range broadening,terahertz time-domain spectroscopy system,THz wave generation

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