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Дата последнего поиска статьи во внешних источниках: 1 июня 2022 г.
Авторы:
Liu Weiwei,
Zhang Zeliang,
Su Qiang,
Xu Qiang,
Guo Lanjun,
Yu Zhiqiang,
Qi Pengfei,
Kosareva Olga,
Gong Cheng
Аннотация:Two-color femtosecond (fs) laser filamentation in the gas medium is an effective way togenerate broadband and high intensity terahertz (THz) pulse. The interdigitated photoconductiveantenna (iPCA) has the advantages of both broadband detection and high signal-to-noiseratio (SNR), which is a very effective way to detect the THz pulse produced by two-color fslaser filamentation. The THz signal from two-color fs laser filamentation is comprehensivelycharacterized by the iPCA, which achieves high SNR, high sensitivity, and polarization detection.This work provides a new idea for high power broadband THz coherent detection.