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Extension of water-window harmonic cutoff by laser defocusing-assisted phase matching
Jin, Cheng1,2; Chen, Ming-Chang3,4; Sun, Hung-Wei3; Lin, C.D.4,5
作者部门瞬态光学技术国家重点实验室
2018-09-15
发表期刊Optics Letters
ISSN01469592;15394794
卷号43期号:18页码:4433-4436
产权排序1
摘要We extend a recently demonstrated scheme [Optica 4, 976 (2017)] to overcome the limit of conventional harmonic cutoff for different pulse durations, laser wavelengths, and gas targets. By tuning the truncation of long wavelength lasers, we show that the defocusing-assisted phase matching (DAPM) can be achieved in a tightly focused beam and highly ionized short gas cell, and can be used to effectively extend the harmonic cutoff energy and optimize its yield. An analysis of phase matching reveals that at longer wavelengths, greater cutoff extension to the water window region is achieved because of the larger harmonic intrinsic phase (proportional to the cube of laser wavelength), and because DAPM works at relatively higher laser intensities using a Ne target. This scheme provides a promising method for efficiently generating intense attosecond light sources in the extreme ultraviolet to x-rays. ? 2018 Optical Society of America
DOI10.1364/OL.43.004433
收录类别SCI ; EI
语种英语
WOS记录号WOS:000444400100031
出版者OSA - The Optical Society
EI入藏号20183805821836
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文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/30635
专题瞬态光学技术国家重点实验室
通讯作者Jin, Cheng
作者单位1.Department of Applied Physics, Nanjing University of Science and Technology, Nanjing; 210094, China;
2.State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China;
3.Institute of Photonics Technologies, National Tsing Hua University, Hsinchu; 30013, Taiwan;
4.Department of Physics, National Tsing Hua University, Hsinchu; 30013, Taiwan;
5.J. R. MacDonald Laboratory, Department of Physics, Kansas State University, Manhattan; KS; 66506, United States
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Jin, Cheng,Chen, Ming-Chang,Sun, Hung-Wei,et al. Extension of water-window harmonic cutoff by laser defocusing-assisted phase matching[J]. Optics Letters,2018,43(18):4433-4436.
APA Jin, Cheng,Chen, Ming-Chang,Sun, Hung-Wei,&Lin, C.D..(2018).Extension of water-window harmonic cutoff by laser defocusing-assisted phase matching.Optics Letters,43(18),4433-4436.
MLA Jin, Cheng,et al."Extension of water-window harmonic cutoff by laser defocusing-assisted phase matching".Optics Letters 43.18(2018):4433-4436.
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