Nitrogen air lasing induced by multiple filaments array

Abstract

Air lasing emission by launching intense ultrafast laser pulses in atmosphere has recently attracted increasing interest in the ultrafast laser science and atmospheric science fields, especially for remote sensing techniques. We demonstrated the fluorescence emissions at 337 nm, 357 nm and 391 nm induced by multiple filaments using four kinds of step phase plates. Our results have indicated that the fluorescence signal has been amplified as it propagates along the filament through amplified spontaneous emission (ASE), and the fluorescence intensity is also enhanced in the backward direction via multiple filaments. Furthermore, the gain coefficient through ASE is increased with the number of filaments.

References

[1] ChinS L, HosseiniS A, LiuW, et al.. The propagation of powerful femtosecond laser pulses in optical media: physics, applications, and new challenges[J]. Canadian journal of physics, 2005, 83(9):863-905

[2] ChinS L, ThébergeF, LiuW. Filamentation nonlinear optics[J]. Applied physics B, 2007, 86(3):477-483

[3] CouaironA, MysyrowiczA. Femtosecond filamentation in transparent media[J]. Physics reports, 2007, 441(2–4):47-189

[4] BergéL, SkupinS, NuterR, et al.. Ultrashort filaments of light in weakly ionized, optically transparent media[J]. Reports on progress in physics, 2007, 70(10):1633-1713

[5] KasparianJ, WolfJ P. Physics and applications of atmospheric nonlinear optics and filamentation[J]. Optics express, 2008, 16(1):466-493

[6] BéjotP, KasparianJ, HeninS, et al.. Higherorder Kerr terms allow ionization-free filamentation in gases[J]. Physical review letters, 2010, 104(10):103903

[7] BéjotP, HertzE, KasparianJ, et al.. Transition from plasma-driven to Kerr-driven laser filamentation[J]. Physical review letters, 2011, 106(24): 243902

[8] XiT T, LuX, ZhangJ. Interaction of light filaments generated by femtosecond laser pulses in air[J]. Physical review letters, 2006, 96(2): 025003

[9] MaY Y, LuX, XiT T, et al.. Filamentation of interacting femtosecond laser pulses in air[J]. Applied physics B, 2008, 93(2): 463-468

[10] ShimB, SchrauthS E, HensleyC J, et al.. Controlled interactions of femtosecond light filaments in air[J]. Physical review A, 2010, 81(6):061803

[11] TzortzakisS, BergéL, CouaironA, et al.. Breakup and fusion of self-guided femtosecond light pulses in air[J]. Physical review letters, 2001, 86(24): 5470-5473

[12] GaoH, ChuW, YuG, et al.. Femtosecond laser filament array generated with step phase plate in air[J]. Optics express, 2013, 21(4):4612-4622

[13] LiH, LiuJ, FengY, et al.. Temporal and phase measurements of ultraviolet femtosecond pulses at 200 nm by molecular alignment based frequency resolved optical gating[J]. Applied physics letters, 2011, 99(1):011108

[14] WangT J, DaigleJ F, YuanS, et al.. Remote generation of high-energy terahertz pulses from two-color femtosecond laser filamentation in air[J]. Physical review A, 2011, 83(5): 053801

[15] LiM, LiW, ShiY, et al.. Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses[J]. Applied physics letters, 2012, 101(16): 161104

[16] XuH, LötstedtE, IwasakiA, et al.. Sub-10-fs population inversion in N₂⁺ in air lasing through multiple state coupling[J]. Nature communications, 2015, 6: 8347

[17] YaoJ, JiangS, ChuW, et al.. Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields[J]. Physical review letters, 2016, 116(14): 143007

[18] MitryukovskiyS, LiuY, DingP, et al.. Backward stimulated radiation from filaments in nitrogen gas and air pumped by circularly polarized 800 nm femtosecond laser pulses[J]. Optics express, 2014, 22(11): 12750-12759

[19] DogariuA, MichaelJ B, ScullyM O, et al.. High-gain backward lasing in air[J]. Science, 2011, 331(6016):442-445

[20] LuoQ, LiuW, ChinS L. Lasing action in air induced by ultra-fast laser filamentation[J]. Applied physics B, 2003, 76(3):337-340

[21] YaoJ, ZengB, XuH, et al.. High-brightness switchable multiwavelength remote laser in air[J]. Physical review A, 2011, 84(5):051802

[22] YaoJ, LiG, JingC, et al.. Remote creation of coherent emissions in air with two-color ultrafast laser pulses[J]. New journal of physics, 2013, 15(2): 023046

[23] BrittonM, LaferriereP, KoD H, et al.. Testing the role of recollision in N₂⁺ air lasing[J]. Physical review letters, 2018, 120(13): 133208

[24] XuH L, AzarmA, BernhardtJ, et al.. The mechanism of nitrogen fluorescence inside a femtosecond laser filament in air[J]. Chemical physics, 2009, 360(1–3): 171-175

[25] XuH L, AzarmA, ChinS L. Controlling fluorescence from N₂ inside femtosecond laser filaments in air by two-color laser pulses[J]. Applied physics letters, 2011, 98(14):141111

[26] BraunA, KornG, LiuX, et al.. Self-channeling of high-peak-power femtosecond laser pulses in air[J]. Optics letters, 1995, 20(1): 73-75

[27] LiuW, PetitS, BeckerA, et al.. Intensity clamping of a femtosecond laser pulse in condensed matter[J]. Optics communications, 2002, 202(1–3):189-197

[28] SkupinS, BergéL, PeschelU, et al.. Filamentation of femtosecond light pulses in the air: turbulent cells versus long-range clusters[J]. Physical review E, 2004, 70(4):046602

[29] TalebpourA, YangJ, ChinS L. Semi-empirical model for the rate of tunnel ionization of N₂ and O₂ molecule in an intense Ti: sapphire laser pulse[J]. Optics communications, 1999, 163(1–3): 29-32

[30] LiuW, ChinS L. Abnormal wavelength dependence of the self-cleaning phenomenon during femtosecond-laser-pulse filamentation[J]. Physical review A, 2007, 76(1): 013826