基于太赫兹量子级联激光器的实时成像研究进展
Progress in real-time imaging based on terahertz quantum-cascade lasers
摘要
Abstract
Terahertz(THz) real-time imaging is a promising field in most of THz technologies.It has lots of features such as fast imaging,high-resolution imaging,etc.The imaging system based on THz quantum-cascade laser(QCL) is one of the most important THz imaging techologies.This type of imaging system has a unique advantage in applications with the features of small size,light weight,and high SNR.In this paper,the research progress of THz QCL and the related real-time imaging system are mainly presented.A hyper-hemispherical high-resistivity silicon lens is used to improve the beam quality of THz QCL.Then a quasi-Gaussian light beam is acquired in imaging system.A THz real-time imaging system is constructed by employing a two dimensional wobbling mirror to eliminate the interference of the THz light.A beam spot size of 45 mm × 30 mm for single frame imaging is obtained.The real-time imaging for blade and tablets is demonstrated with a resolution better than 0.5 mm.Finally,the improvements of the source,optics,and detector array of the system and the imaging effect are summarized.The application prospect in material analysis and bio-medical imaging as well as the future trends of the real-time imaging system are discussed.关键词
太赫兹/实时成像/量子级联激光器/焦平面阵列Key words
Terahertz/real-time imaging/quantum cascade laser/focal plane array分类
数理科学引用本文复制引用
谭智勇,万文坚,黎华,曹俊诚..基于太赫兹量子级联激光器的实时成像研究进展[J].中国光学,2017,10(1):68-76,9.基金项目
国家重点基础研究发展计划(973计划)资助项目(No.2014CB339803) （973计划）
国家自然科学基金资助项目(No.61131006,No.61321492,No.61575214,No.61405233) （No.61131006,No.61321492,No.61575214,No.61405233）
国家重大科学仪器设备开发专项资助项目(No.2011YQ150021) （No.2011YQ150021）
中国科学院“百人计划” （）
中科院创新团队国际合作伙伴计划:“高迁移率材料工程”创新团队项目以及上海市科学技术委员会(No.14530711300,No.15DZ0500103)Supported by National Program on Key Basic Research Projects of China(No.2014CB339803) （No.14530711300,No.15DZ0500103）
National Natural Science Foundation of China(No.61131006,No.61321492,No.61575214,No.61405233) （No.61131006,No.61321492,No.61575214,No.61405233）
Major National Development Project of Scientific Instrument and Equipment(No.2011YQI50021) （No.2011YQI50021）
Hundred Talent Program of the China Academy Sciences （）
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 (No.14530711300,No.15DZ0500103) （No.14530711300,No.15DZ0500103）
