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飞秒涡旋激光在空气密度孔中成丝延长的理论研究

  • 杨炼彬 ,
  • 徐立桐 ,
  • 奚婷婷
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  • 中国科学院大学物理科学学院, 北京 100049

收稿日期: 2022-10-27

  修回日期: 2023-03-22

  网络出版日期: 2023-03-22

基金资助

国家自然科学基金(11874056)资助

Filamentation extension of femtosecond vortex beams by air density holes

  • YANG Lianbin ,
  • XU Litong ,
  • XI Tingting
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  • School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2022-10-27

  Revised date: 2023-03-22

  Online published: 2023-03-22

摘要

数值模拟空气密度孔对飞秒涡旋激光在空气中成丝的影响。研究结果表明,对于不同初始能量的飞秒涡旋激光,通过在涡旋光成丝起点附近引入适当长度的空气密度孔,其成丝长度都可以得到极大的延长,最大可延长为无密度孔情况的4倍多。进一步研究揭示其物理机制,空气密度孔的引入导致脉冲中心涡旋环的散焦,改变了原有的电子密度及其分布,削弱了对后沿脉冲的散焦,使得飞秒涡旋脉冲后沿能够再聚焦,进而延长了成丝过程。

本文引用格式

杨炼彬 , 徐立桐 , 奚婷婷 . 飞秒涡旋激光在空气密度孔中成丝延长的理论研究[J]. 中国科学院大学学报, 2023 , 40(4) : 433 -440 . DOI: 10.7523/j.ucas.2023.024

Abstract

We study the influence of air density holes on the filamentation of femtosecond vortex laser beams. The result shows that for the femtosecond vortex laser beams of different initial energies, the filamentation can be greatly elongated by introducing an air density hole which is located near the filamentation onset position. The maximal filamentation length is four times more than that without density hole. The mechanism is that the defocus of the most intense vortex ring induced by air density hole changes the density and distribution of the electrons. As a result, the defocus of trailing pulse edge is weakened, and the trailing edge of femtosecond vortex pulse can refocus, leading to the extension of the filamentation.

参考文献

[1] Zhang C M, Wang J L, Chen X W, et al. Tunable ultraviolet source from fifth and seventh harmonic generated by mid-infrared pulses filamentation in air[J]. Laser Physics, 2009, 19(8):1793-1795. DOI:10.1134/S1054660X09150493.
[2] Mitrofanov A V, Voronin A A, Mitryukovskiy S I, et al. Mid-infrared-to-mid-ultraviolet supercontinuum enhanced by third-to-fifteenth odd harmonics[J]. Optics Letters, 2015, 40(9):2068-2071. DOI:10.1364/OL.40.002068.
[3] Petit Y, Henin S, Nakaema W M, et al. 1-J white-light continuum from 100-TW laser pulses[J]. Physical Review A, 2011, 83:013805. DOI:10.1103/PhysRevA.83.013805.
[4] Lu C H, Tsou Y J, Chen H Y, et al. Generation of intense supercontinuum in condensed media[J]. Optica, 2014, 1(6):400-406. DOI:10.1364/OPTICA.1.000400.
[5] Xu S, Zheng Y, Liu Y, et al. Intensity clamping during dual-beam interference[J]. Laser Physics, 2010, 20(11):1968-1972. DOI:10.1134/S1054660X10210139.
[6] Heins A, Guo C L. Spectral investigation of higher-order Kerr effects in a tight-focusing geometry[J]. Optics Express, 2013, 21(24):29401-29411. DOI:10.1364/OE.21.029401.
[7] Kasparian J, Rodriguez M, Méjean G, et al. White-light filaments for atmospheric analysis[J]. Science, 2003, 301(5629):61-64. DOI:10.1126/science.1085020.
[8] Xu H L, Daigle J F, Luo Q, et al. Femtosecond laser-induced nonlinear spectroscopy for remote sensing of methane[J]. Applied Physics B, 2006, 82(4):655-658. DOI:10.1007/s00340-005-2123-8.
[9] Chin S L, Xu H L, Luo Q, et al. Filamentation "remote" sensing of chemical and biological agents/pollutants using only one femtosecond laser source[J]. Applied Physics B, 2009, 95(1):1-12. DOI:10.1007/s00340-009-3381-7.
[10] Wolf J P. Short-pulse lasers for weather control[J]. Reports on Progress in Physics, 2018, 81(2):026001. DOI:10.1088/1361-6633/aa8488.
[11] Produit T, Walch P, Herkommer C, et al. The laser lightning rod project[J]. European Physical Journal-applied Physics, 2021, 93(1):10504. DOI:10.1051/epjap/2020200243.
[12] Herkommer C, Krötz P, Jung R, et al. Ultrafast thin-disk multipass amplifier with 720 mJ operating at kilohertz repetition rate for applications in atmospheric research[J]. Optics Express, 2020, 28(20):30164-30173. DOI:10.1364/OE.404185.
[13] Schimmel G, Produit T, Mongin D, et al. Free space laser telecommunication through fog[J]. Optica, 2018, 5(10):1338-1341. DOI:10.1364/OPTICA.5.001338.
[14] Schroeder M C, Larkin I, Produit T, et al. Molecular quantum wakes for clearing fog[J]. Optics Express, 2020, 28(8):11463-11471. DOI:10.1364/OE.389393.
[15] Kotzagianni M, Couris S. Femtosecond laser induced breakdown for combustion diagnostics[J]. Applied Physics Letters, 2012, 100(26):264104. DOI:10.1063/1.4731781.
[16] Baudelet M, Guyon L, Yu J, et al. Spectral signature of native CN bonds for bacterium detection and identification using femtosecond laser-induced breakdown spectroscopy[J]. Applied Physics Letters, 2006, 88(6):063901. DOI:10.1063/1.2170437.
[17] Xi T T, Zhao Z J, Hao Z Q. Femtosecond laser filamentation with a microlens array in air[J]. Journal of the Optical Society of America B, 2015, 32(1):163-166. DOI:10.1364/JOSAB.32.000163.
[18] Camino A, Hao Z Q, Liu X, et al. Control of laser filamentation in fused silica by a periodic microlens array[J]. Optics Express, 2013, 21(7):7908-7915. DOI:10.1364/OE.21.007908.
[19] Hu Y Z, Nie J S, Sun K, et al. Generation of periodic filament arrays in air through two-dimensional acousto-optic modulation[J]. Journal of the Optical Society of America B, 2016, 33(10):2144-2148. DOI:10.1364/JOSAB.33.002144.
[20] Chen A M, Li S Y, Qi H X, et al. Elongation of plasma channel generated by temporally shaped femtosecond laser pulse[J]. Optics Communications, 2017, 383:144-147. DOI:10.1016/j.optcom.2016.08.079.
[21] Zhan L D, Xu M N, Xi T T, et al. Contributions of leading and tailing pulse edges to filamentation and supercontinuum generation of femtosecond pulses in air[J]. Physics of Plasmas, 2018, 25(10):103102. DOI:10.1063/1.5045783.
[22] Li J, Tan W J, Si J H, et al. Control of the spatial characteristics of femtosecond laser filamentation in glass via feedback-based wavefront shaping with an annular phase mask[J]. Optics Express, 2021, 29(4):5972-5981. DOI:10.1364/OE.418334.
[23] Geints Y E, Zemlyanov A A. Effect of high-power laser divergence on the plasma structural parameters during multiple filamentation in air[J]. Physical Review A, 2016, 93(6):063833. DOI:10.1103/PhysRevA.93.063833.
[24] Hong Z F, Zhang Q B, Ali Rezvani S, et al. Extending plasma channel of filamentation with a multi-focal-length beam[J]. Optics Express, 2016, 24(4):4029-4041. DOI:10.1364/oe.24.004029.
[25] Feng Z F, Li W, Yu C X, et al. Influence of the external focusing and the pulse parameters on the propagation of femtosecond annular Gaussian filaments in air[J]. Optics Express, 2016, 24(6):6381-6390. DOI:10.1364/OE.24.006381.
[26] Polynkin P, Kolesik M, Roberts A, et al. Generation of extended plasma channels in air using femtosecond Bessel beams[J]. Optics Express, 2008, 16(20):15733-15740. DOI:10.1364/OE.16.015733.
[27] Akturk S, Zhou B, Franco M, et al. Generation of long plasma channels in air by focusing ultrashort laser pulses with an axicon[J]. Optics Communications, 2009, 282(1):129-134. DOI:10.1016/j.optcom.2008.09.048.
[28] Ju L B, Huang T W, Xiao K D, et al. Controlling multiple filaments by relativistic optical vortex beams in plasmas[J]. Physical Review E, 2016, 94(3):033202. DOI:10.1103/PhysRevE.94.033202.
[29] Porras M A, Carvalho M, Leblond H, et al. Stabilization of vortex beams in Kerr media by nonlinear absorption[J]. Physical Review A, 2016, 94(5):053810. DOI:10.1103/PhysRevA.94.053810.
[30] Xu L T, Li D W, Chang J W, et al. Helical filaments array generated by femtosecond vortex beams with lens array in air[J]. Results in Physics, 2021, 26:104334. DOI:10.1016/j.rinp.2021.104334.
[31] Fibich G, Gavish N. Critical power of collapsing vortices[J]. Physical Review A, 2008, 77(4):045803. DOI:10.1103/PhysRevA.77.045803.
[32] Polynkin P, Ament C, Moloney J V. Self-focusing of ultraintense femtosecond optical vortices in air[J]. Physical Review Letters, 2013, 111(2):023901. DOI:10.1103/PhysRevLett.111.023901.
[33] Rozas D, Law C T, Swartzlander G A. Propagation dynamics of optical vortices[J]. Journal of the Optical Society of America B, 1997, 14(11):3054-3065. DOI:10.1364/JOSAB.14.003054.
[34] Cheng Y H, Wahlstrand J K, Jhajj N, et al. The effect of long timescale gas dynamics on femtosecond filamentation[J]. Optics Express, 2013, 21(4):4740-4751. DOI:10.1364/OE.21.004740.
[35] Chang J W, Li D W, Xu L T, et al. Elongation of filamentation and enhancement of supercontinuum generation by a preformed air density hole[J]. Optics Express, 2022, 30(10):16987-16995. DOI:10.1364/OE.458128.
[36] Vinçotte A, Bergé L. Femtosecond optical vortices in air[J]. Physical Review Letters, 2005, 95(19):193901. DOI:10.1103/PhysRevLett.95.193901.
[37] Xi T T, Zhao Z J, Hao Z Q. Filamentation of femtosecond laser pulses with spatial chirp in air[J]. Journal of the Optical Society of America B, 2014, 31(2):321-324. DOI:10.1364/JOSAB.31.000321.
[38] Wahlstrand J K, Jhajj N, Milchberg H M. Controlling femtosecond filament propagation using externally driven gas motion[J]. Optics Letters, 2019, 44(2):199-202. DOI:10.1364/OL.44.000199.
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