Self-compression of femtosecond pulses in argon with a power close to the self-focusing threshold

被引：6

作者：

Chen, Xiao-Wei ^{[1
]}

Zeng, Zhi-Nan ^{[1
]}

Dai, Jun ^{[1
]}

Li, Xiao-Fang ^{[1
]}

Li, Ru-Xin ^{[1
]}

Xu, Zhi-Zhan ^{[1
]}

机构：

[1] State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

来源：

| 1826年 / Institute of Physics Publishing卷 / 17期

关键词：

Nonlinear propagation; Self-compression; Self-focusing;

D O I：

10.1088/1674-1056/17/5/046

中图分类号：

学科分类号：

摘要：

Self-compression of femtosecond pulses in noble gases with an input power close to the self-focusing threshold has been investigated experimentally and theoretically. It is demonstrated that either multiphoton ionization (MPI) or space - time focusing and self-steepening effects can induce pulse shortening, but they predominate at different beam intensities during the propagation. The latter effects play a key role in the final pulse self-compression. By choosing an appropriate focusing parameter, action distance of the space - time focusing and self-steepening effects can be lengthened, which can promote a shock pulse structure with a duration as short as two optical cycles. It is also found that, for our calculation cases in which an input pulse power is close to the self-focusing threshold, either group velocity dispersion (GVD) or multiphoton absorption (MPA) has a negligible influence on pulse characteristics in the propagation process. © 2008 Chin. Phys. Soc. and IOP Publishing Ltd.

引用

页码：1826 / 1832

页数：6

共 19 条

[1]

Braun A., Korn G., Liu X., Du D., Squier J., Mourou G., Opt. Lett., 20, 1, (1995)

[2]

Chiron A., Lamouroux B., Lange R., Ripoche J.F., Franco M., Prade B., Bonnaud G., Riazuelo G., Mysyrowicz A., Eur. Phys. J., 6, 3, (1999)

[3]

Pitt T.A., Luk T.S., Gruetzner J.K., Nelson T.R., McPherson A., Cameron S.M., J. Opt. Soc. Am., 21, (2004)

[4]

Dubietis A., Tamosauskas G., Diomin I., Varanavicius A., Opt. Lett., 28, 14, (2003)

[5]

Tzortzakis S., Sudrie L., Franco M., Prade B., Mysyrowicz A., Phys. Rev. Lett., 87, 21, (2001)

[6]

Ward H., Berge L., Phys. Rev. Lett., 90, 5, (2003)

[7]

Nurhuda M., Suda A., Hatayama M., Nagasaka K., Midorikawa K., Phys. Rev., 66, 2, (2002)

[8]

Henz S., Herrmann J., Phys. Rev., 59, 3, (1999)

[9]

Gaeta A.L., Phys. Rev. Lett., 84, 16, (2000)

[10]

Champeaux S., Berge L., Phys. Rev., 68, 6, (2003)

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