基于超薄钽酸锂晶体材料高响应太赫兹探测器
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电子科技大学光电信息学院,电子科技大学光电信息学院,电子科技大学光电信息学院,电子科技大学光电信息学院,电子科技大学光电信息学院,电子科技大学光电信息学院

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国家自然科学基金项目(面上项目,重点项目,重大项目);中国博士后科学基金;创新研究群体科学基金


High responsivity of terahertz detector based on ultra-thin LiTaO3 crystal material
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State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,No. 4,Section 2,North Jianshe Road,State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,No. 4,Section 2,North Jianshe Road,aState Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,No. 4,Section 2,North Jianshe Road,State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,No. 4,Section 2,North Jianshe Road,State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,No. 4,Section 2,North Jianshe Road,State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,No. 4,Section 2,North Jianshe Road

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    摘要:

    太赫兹(Thz)探测器工作在室温条件下极大地促进了太赫兹科学与技术的应用。超薄(10μm)钽酸锂(LiTaO3)晶片被用作太赫兹探测器敏感元材料。基于钽酸锂晶片太赫兹探测器在2.52 THz激光辐射源照射下, 20Hz斩波频率时响应率可达到8.38×104V/W, 等效噪声功率NEP)可达到1.26×10-10W。这种加工超薄钽酸锂晶片的方法为制备高响应率太赫兹探测器提供了一个可行的方法。

    Abstract:

    Terahertz (THz) detector work at room temperature could greatly expand the application of THz science and technology. Ultra-thin(10μm)lithium tantalate crystal (LiTaO3) material was used as sensitive layer of the detector. The responsivity could reach up to 8.38×104V/W and the noise equivalent power (NEP) could be as low as 1.26×10-10W at 20Hz operating frequency by laser radiation source at 2.52 THz. Furthermore, this processing method to fabricate the ultra-thin LiTaO3 crystal material could potentially provide a feasible approach for even higher response terahertz detectors.

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梁志清,刘子骥,蒋亚东,郑兴,王涛,于贺.基于超薄钽酸锂晶体材料高响应太赫兹探测器[J].红外与毫米波学报,2016,35(5):520~525]. LIANG Zhi-Qing, LIU Zi-Ji, JIANG Ya-Dong, ZHENG Xing, WANG-Tao, YU He. High responsivity of terahertz detector based on ultra-thin LiTaO3 crystal material[J]. J. Infrared Millim. Waves,2016,35(5):520~525.]

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  • 收稿日期:2016-01-06
  • 最后修改日期:2016-04-08
  • 录用日期:2016-04-11
  • 在线发布日期: 2016-10-05
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