基于石墨烯的太赫兹器件研究进展∗
Progress of terahertz devices based on graphene
摘要
Abstract
Graphene has unique electronic properties stemming from a linear gapless carrier energy spectrum, and has dominant advantages in the research of devices such as lasers, detectors and modulators in terahertz region due to its tunable energy gap and extremely high carrier mobility. In this review, we summarize its latest progress in applications of terahertz devices such as lasers, detectors and modulators. Terahertz lasers based on graphene can reach a gain as high as 104 cm−1, and terahertz detectors with different structures such as a bilayer graphene field-effect transistor with top gate and buried gate can achieve NEP (noise equivalent power)∼nW/√Hz. Graphene terahertz modulators, which are equipped with transmission configuration and reflection configuration, can have a very high modulation depth. These results may be helpful for developing the high-efficiency graphene terahertz devices.关键词
太赫兹/石墨烯/太赫兹辐射源/太赫兹探测器Key words
terahertz/graphene/terahertz laser/terahertz detectors引用本文复制引用
冯伟,张戎,曹俊诚..基于石墨烯的太赫兹器件研究进展∗[J].物理学报,2015,(22):1-10,10.基金项目
国家重点基础研究发展计划(批准号:2014CB339803)、国家自然科学基金(批准号:61131006,61321492,61306066)、国家重大科学仪器设备开发专项(批准号:2011YQ150021)、国家科技重大专项(批准号:2011ZX02707)、中国科学院重要方向项目(批准号YYYJ-1123-1)、中国科学院创新团队国际合作伙伴计划:“高迁移率材料工程”创新团队项目和上海市科学技术委员会(批准号14530711300,13ZR1464600)资助的课题.* Project supported by the National Basic Research Program of China (Grant No.2014CB339803), the National Natural Science Foundation of China (Grant Nos.61131006,61321492,61306066), the National Key Scientific Instrument and Equipment Development Project, China (Grant No.2011YQ150021), the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No.2011ZX02707), the Major Project of the Chinese Academy of Sciences (Grant No. YYYJ-1123-1), the International Collaboration and Innovation Program on High Mobility Materials Engineering of the Chinese Academy of Sciences, and the Shanghai Municipal Commission of Science and Technology, China (Grant Nos.14530711300,13ZR1464600) （批准号:2014CB339803）
