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Spatiotemporal instability in nonlinear dispersive media in the presence of space-time focusing effect
Wen, SC; Fan, DY; Fan, DY (reprint author), Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China.
2002
Source PublicationSci. China Ser. A-Math. Phys. Astron.
Volume45Issue:9Pages:1192
AbstractSpatiotemporal instability in nonlinear dispersive media is investigated on the basis of the nonlinear envelope equation. A general expression for instability gain which includes the effects of space-time focusing, arbitrarily higher-order dispersions and self-steepening is obtained. It is found that, for both normal and anomalous group-velocity dispersions, space-time focusing may lead to the appearance of new instability regions and influence the original instability gain spectra mainly by shrinking their regions. The region of the original instability gain spectrum shrinks much more in normal dispersion case than in anomalous one. In the former case, space-time focusing completely suppresses the growing of higher frequency components. In addition, we find that all the oddth-order dispersions contribute none to instability, while all the eventh-order dispersions influence instability region and do not influence the maximum instability gain, therein the fourth-order dispersion plays the same role as space-time focusing in spatiotemporal instability. The main role played by self-steepening in spatiotemporal instability is that it reduces the instability gain and exerts much more significant influence on the new instability regions resulting from space-time focusing.
SubtypeArticle
Indexed BySCI
Language英语
WOS IDWOS:000177647600011
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.siom.ac.cn/handle/181231/17779
Collection高功率激光物理国家实验室
Corresponding AuthorFan, DY (reprint author), Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China.
Affiliation1.Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Wen, SC,Fan, DY,Fan, DY . Spatiotemporal instability in nonlinear dispersive media in the presence of space-time focusing effect[J]. Sci. China Ser. A-Math. Phys. Astron.,2002,45(9):1192.
APA Wen, SC,Fan, DY,&Fan, DY .(2002).Spatiotemporal instability in nonlinear dispersive media in the presence of space-time focusing effect.Sci. China Ser. A-Math. Phys. Astron.,45(9),1192.
MLA Wen, SC,et al."Spatiotemporal instability in nonlinear dispersive media in the presence of space-time focusing effect".Sci. China Ser. A-Math. Phys. Astron. 45.9(2002):1192.
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