典型文献
Photoreflectance system based on vacuum ultraviolet laser at 177.3 nm
文献摘要：
Photoreflectance(PR)spectroscopy is a powerful and non-destructive experimental technique to explore interband transitions of semiconductors.In most PR systems,the photon energy of the pumping beam is usually chosen to be higher than the bandgap energy of the sample.To the best of our knowledge,the highest energy of pumping laser in reported PR systems is 5.08 eV(244 nm),not yet in the vacuum ultraviolet(VUV)region.In this work,we report the design and construction of a PR system pumped by VUV laser of 7.0 eV(177.3 nm).At the same time,dual-modulated technique is applied and a dual channel lock-in-amplifier is integrated into the system for efficient PR measurement.The system's performance is verified by the PR spectroscopy measurement of well-studied semiconductors,which testifies its ability to probe critical-point energies of the electronic band in semiconductors from ultraviolet to near-infrared spectral region.
文献关键词：
中图分类号：
作者姓名：
Wei-Xia Luo;Xue-Lu Liu;Xiang-Dong Luo;Feng Yang;Shen-Jin Zhang;Qin-Jun Peng;Zu-Yan Xu;Ping-Heng Tan
作者机构：
State Key Laboratory of Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences(CAS),Beijing 100083,China;Center of Materials Science and Optoelectronics Engineering&CAS Center of Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100049,China;Jiangsu Key Laboratory of ASIC,Nantong University,Nantong 226019,China;Key Laboratory of Solid State Laser,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Function Crystal and Laser Technology,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China
文献出处：
引用格式：
[1]Wei-Xia Luo;Xue-Lu Liu;Xiang-Dong Luo;Feng Yang;Shen-Jin Zhang;Qin-Jun Peng;Zu-Yan Xu;Ping-Heng Tan-.Photoreflectance system based on vacuum ultraviolet laser at 177.3 nm)[J].中国物理B（英文版）,2022(11):112-117
A类：
Photoreflectance
B类：
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AB值：
0.553744
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