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    Two-dimensional multimode terahertz random lasing with metal pillars by Zeng, Yongquan, Liang, Guozhen, Qiang, Bo, Wu, Kedi, Tao, Jing, Hu, Xiaonan, Li, Lianhe, Davies, Alexander Giles, Linfield, Edmund Harold, Liang, Hou Kun, Zhang, Ying, Chong, Yidong, Wang, Qi Jie

    Published 2020
    “…However, it remains a challenge to achieve a broadband multimode random laser with high scattering efficiency, particularly at long wavelengths. Here, we develop a new class of strongly multimode random lasers in the terahertz (THz) frequency range in which optical feedback is provided by multiple scattering from metal pillars embedded in a quantum cascade (QC) gain medium. …”
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    Journal Article
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