中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 近代物理研究所
  3. 中国科学院近代物理研究所
Record-level quantum efficiency from a high polarization strained GaAs/GaAsP superlattice photocathode with distributed Bragg reflector

文献类型：期刊论文

作者Liu, Wei1,2,3; Chen, Yiqiao4; Lu, Wentao4; Moy, Aaron4; Poelker, Matthew3; Stutzman, Marcy3; Zhang, Shukui3
刊名APPLIED PHYSICS LETTERS
出版日期2016-12-19
卷号109页码:5
ISSN号0003-6951
DOI10.1063/1.4972180
英文摘要Photocathodes that provide high electron-spin polarization (ESP) and high quantum efficiency (QE) can significantly enhance the physics capabilities of electron accelerators. We report record-level QE from a high-polarization strained GaAs/GaAsP superlattice photocathode fabricated with a Distributed Bragg Reflector (DBR). The DBR photocathode technique enhances the absorption of incident laser light thereby enhancing QE, but as literature suggests, it is very challenging to optimize all of the parameters associated with the fabrication of complicated photocathode structures composed of many distinct layers. Past reports of DBR photocathodes describe high polarization but typically QE of only similar to 1%, which is comparable to QE of high polarization photocathodes grown without a DBR structure. This work describes a strained GaAs/GaAsP superlattice DBR photocathode exhibiting a high polarization of 84% and significantly enhanced QE of 6.4%. Published by AIP Publishing.
WOS关键词ELECTRON-SPIN POLARIZATION ; GAAS ; PHOTOEMISSION ; PHOTOELECTRONS ; INGAAS ; LAYER
资助项目U.S. DOE[DE-AC05-06OR23177] ; U.S. DOEs Office of Nuclear Physics SBIR program[DE-SC0009516]
WOS研究方向Physics
语种英语
出版者AMER INST PHYSICS
WOS记录号WOS:000391857200010
资助机构U.S. DOE ; U.S. DOEs Office of Nuclear Physics SBIR program
源URL[http://119.78.100.186/handle/113462/44119]  
专题中国科学院近代物理研究所
通讯作者Liu, Wei
作者单位1.Chinese Acad Sci, Inst Modern Phys, 509 Nanchang Rd, Lanzhou 730000, Peoples R China
2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
3.Thomas Jefferson Natl Accelerator Facil, 12000 Jefferson Ave, Newport News, VA 23606 USA
4.SVT Associates Inc, 7620 Executive Dr, Eden Prairie, MN 55344 USA
推荐引用方式
GB/T 7714		 Liu, Wei,Chen, Yiqiao,Lu, Wentao,et al. Record-level quantum efficiency from a high polarization strained GaAs/GaAsP superlattice photocathode with distributed Bragg reflector[J]. APPLIED PHYSICS LETTERS,2016,109:5.
APA Liu, Wei.,Chen, Yiqiao.,Lu, Wentao.,Moy, Aaron.,Poelker, Matthew.,...&Zhang, Shukui.(2016).Record-level quantum efficiency from a high polarization strained GaAs/GaAsP superlattice photocathode with distributed Bragg reflector.APPLIED PHYSICS LETTERS,109,5.
MLA Liu, Wei,et al."Record-level quantum efficiency from a high polarization strained GaAs/GaAsP superlattice photocathode with distributed Bragg reflector".APPLIED PHYSICS LETTERS 109(2016):5.

入库方式： OAI收割

来源：近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。