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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
Department瞬态光学技术国家重点实验室
2018-09-15
Source PublicationOptics Letters
ISSN01469592;15394794
Volume43Issue:18Pages:4433-4436
Contribution Rank1
AbstractWe 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
Indexed BySCI ; EI
Language英语
WOS IDWOS:000444400100031
PublisherOSA - The Optical Society
EI Accession Number20183805821836
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30635
Collection瞬态光学技术国家重点实验室
Corresponding AuthorJin, Cheng
Affiliation1.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
Recommended Citation
GB/T 7714
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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