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High-power electrically pumped terahertz topological laser based on a surface metallic Dirac-vortex cavity.

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Title: High-power electrically pumped terahertz topological laser based on a surface metallic Dirac-vortex cavity.
Authors: Liu, Junhong, Xu, Yunfei, Li, Rusong, Sun, Yongqiang, Xin, Kaiyao, Zhang, Jinchuan, Lu, Quanyong, Zhuo, Ning, Liu, Junqi, Wang, Lijun, Cheng, Fengmin, Liu, Shuman, Liu, Fengqi, Zhai, Shenqiang
Source: Nature Communications; 6/21/2024, Vol. 15 Issue 1, p1-7, 7p
Subject Terms: METALLIC surfaces, LASER pumping, LASERS, RESEARCH personnel, QUANTUM cascade lasers, ACTIVE medium
Abstract: Topological lasers (TLs) have attracted widespread attention due to their mode robustness against perturbations or defects. Among them, electrically pumped TLs have gained extensive research interest due to their advantages of compact size and easy integration. Nevertheless, limited studies on electrically pumped TLs have been reported in the terahertz (THz) and telecom wavelength ranges with relatively low output powers, causing a wide gap between practical applications. Here, we introduce a surface metallic Dirac-vortex cavity (SMDC) design to solve the difficulty of increasing power for electrically pumped TLs in the THz spectral range. Due to the strong coupling between the SMDC and the active region, robust 2D topological defect lasing modes are obtained. More importantly, enough gain and large radiative efficiency provided by the SMDC bring in the increase of the output power to a maximum peak power of 150 mW which demonstrates the practical application potential of electrically pumped TLs. The researchers showcase an exciting surface metallic Dirac-vortex cavity design with enhanced power capabilities for electrically pumped Topological Lasers in the THz spectral range. [ABSTRACT FROM AUTHOR]
Copyright of Nature Communications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: High-power electrically pumped terahertz topological laser based on a surface metallic Dirac-vortex cavity.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Junhong%22">Liu, Junhong</searchLink><br /><searchLink fieldCode="AR" term="%22Xu%2C+Yunfei%22">Xu, Yunfei</searchLink><br /><searchLink fieldCode="AR" term="%22Li%2C+Rusong%22">Li, Rusong</searchLink><br /><searchLink fieldCode="AR" term="%22Sun%2C+Yongqiang%22">Sun, Yongqiang</searchLink><br /><searchLink fieldCode="AR" term="%22Xin%2C+Kaiyao%22">Xin, Kaiyao</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jinchuan%22">Zhang, Jinchuan</searchLink><br /><searchLink fieldCode="AR" term="%22Lu%2C+Quanyong%22">Lu, Quanyong</searchLink><br /><searchLink fieldCode="AR" term="%22Zhuo%2C+Ning%22">Zhuo, Ning</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Junqi%22">Liu, Junqi</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Lijun%22">Wang, Lijun</searchLink><br /><searchLink fieldCode="AR" term="%22Cheng%2C+Fengmin%22">Cheng, Fengmin</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Shuman%22">Liu, Shuman</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Fengqi%22">Liu, Fengqi</searchLink><br /><searchLink fieldCode="AR" term="%22Zhai%2C+Shenqiang%22">Zhai, Shenqiang</searchLink>
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  Data: Nature Communications; 6/21/2024, Vol. 15 Issue 1, p1-7, 7p
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  Data: <searchLink fieldCode="DE" term="%22METALLIC+surfaces%22">METALLIC surfaces</searchLink><br /><searchLink fieldCode="DE" term="%22LASER+pumping%22">LASER pumping</searchLink><br /><searchLink fieldCode="DE" term="%22LASERS%22">LASERS</searchLink><br /><searchLink fieldCode="DE" term="%22RESEARCH+personnel%22">RESEARCH personnel</searchLink><br /><searchLink fieldCode="DE" term="%22QUANTUM+cascade+lasers%22">QUANTUM cascade lasers</searchLink><br /><searchLink fieldCode="DE" term="%22ACTIVE+medium%22">ACTIVE medium</searchLink>
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  Data: Topological lasers (TLs) have attracted widespread attention due to their mode robustness against perturbations or defects. Among them, electrically pumped TLs have gained extensive research interest due to their advantages of compact size and easy integration. Nevertheless, limited studies on electrically pumped TLs have been reported in the terahertz (THz) and telecom wavelength ranges with relatively low output powers, causing a wide gap between practical applications. Here, we introduce a surface metallic Dirac-vortex cavity (SMDC) design to solve the difficulty of increasing power for electrically pumped TLs in the THz spectral range. Due to the strong coupling between the SMDC and the active region, robust 2D topological defect lasing modes are obtained. More importantly, enough gain and large radiative efficiency provided by the SMDC bring in the increase of the output power to a maximum peak power of 150 mW which demonstrates the practical application potential of electrically pumped TLs. The researchers showcase an exciting surface metallic Dirac-vortex cavity design with enhanced power capabilities for electrically pumped Topological Lasers in the THz spectral range. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Nature Communications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1038/s41467-024-48788-y
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        Text: English
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        Type: general
      – SubjectFull: LASER pumping
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              Text: 6/21/2024
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