[1] Couairon A, Mysyrowicz A. Femtosecond filamentation in transparent media[J]. Physics Reports, 2007, 441(2/3/4): 47-189.

[2] Braun A, Korn G, Liu X, et al. Self-channeling of high-peak-power femtosecond laser pulses in air[J]. Optics Letters, 1995, 20(1): 73-75.

[3] Brodeur A, Chin S L. Ultrafast white-light continuum generation and self-focusing in transparent condensed media[J]. Journal of the Optical Society of America B, 1999, 16(4): 637-650.

[4] Liu W W. Intensity clamping during femtosecond laser filamentation[J]. Chinese Journal of Physics, 2014, 52(1): 465-489.

[5] Frolov S A, Trunov V I, Leshchenko V E, et al. Multi-octave supercontinuum generation with IR radiation filamentation in transparent solid-state media[J]. Applied Physics B, 2016, 122(5): 124.

[6] Xu F, Liu J S, Li R X, et al. Nonlinear X-wave formation and conical emission at different powers of a femtosecond laser pulse in water[J]. Optics Communications, 2007, 275(2): 433-439.

[7] Ionin A A, Seleznev L V, Sunchugasheva E S. Formation of plasma channels in air under filamentation of focused ultrashort laser pulses[J]. Laser Physics, 2015, 25(3): 033001.

[8] Kasparian J, Rodriguez M, Méjean G, et al. White-light filaments for atmospheric analysis[J]. Science, 2003, 301(5629): 61-64.

[9] Graydon O. Lightning control by lasers[J]. Nature Photonics, 2009, 3(3): 120-121.

[10] Henin S, Petit Y, Rohwetter P, et al. Field measurements suggest the mechanism of laser-assisted water condensation[J]. Nature Communications, 2011, 2: 456.

[11] Ju J J, Liu J S, Wang C, et al. Laser-filamentation-induced condensation and snow formation in a cloud chamber[J]. Optics Letters, 2012, 37(7): 1214-1216.

[12] Zhao J Y, Liu W W, Li S C, et al. Clue to a thorough understanding of terahertz pulse generation by femtosecond laser filamentation[J]. Photonics Research, 2018, 6(4): 296-306.

[13] D'Amico C. Houard A, Franco M, et al. Conical forward THz emission from femtosecond-laser-beam filamentation in air[J]. Physical Review Letters, 2007, 98(23): 235002.

[14] 杨奇彪, 陈中培, 杨涛, 等. 飞秒激光加工YG6不同微织构表面浸润性研究[J]. 激光与光电子学进展, 2018, 55(9): 091404.

    Yang Q B, Chen Z P, Yang T, et al. Surface wettability of different micro-textured YG6 processed by femtosecond laser[J]. Laser and Optoelectronics Progress, 2018, 55(9): 091404.

[15] 张艳杰, 宋海英, 刘海云, 等. 飞秒激光成丝制备毫米级深孔[J]. 中国激光, 2017, 44(4): 0402012.

    Zhang Y J, Song H Y, Liu H Y, et al. Fabrication of millimeter-scaled holes by femtosecond laser filamentation[J]. Chinese Journal of Lasers, 2017, 44(4): 0402012.

[16] Théberge F, Aközbek N, Liu W, et al. Conical emission and induced frequency shift of third-harmonic generation during ultrashort laser filamentation in air[J]. Optics Communications, 2007, 276(2): 298-304.

[17] Li S Y, Chen A M, Jiang Y F, et al. “Long-lived” luminous effects in femtosecond laser filament[J]. Optics Communications, 2018, 426(2): 105-109.

[18] Corkum P B, Rolland C, Srinivasanrao-Rao T. Supercontinuum generation in gases[J]. Physics Review Letters, 1986, 57(18): 2268-2271.

[19] Jimbo T, Caplan V L, Li Q X, et al. Enhancement of ultrafast supercontinuum generation in water by the addition of Zn 2+ and K + cations[J]. Optics Letters, 1987, 17(7): 477-479.

[20] Alfano R R, Shapiro S L. Emission in the region 4000 to 7000 Å via four-photon coupling in glass[J]. Physical Review Letters, 1970, 24(11): 584-587.

[21] Raytchev M, Pandurski E, Buchvarov I, et al. Bichromophoric interactions and time-dependent excited state mixing in pyrene derivatives. A femtosecond broad-band pump-probe study[J]. The Journal of Physical Chemistry A, 2003, 107(23): 4592-4600.

[22] Baltuška A, Takao F J, Kobayashi T. Visible pulse compression to 4 fs by optical parametric amplification and programmable dispersion control[J]. Optics Letters, 2002, 27(5): 306-308.

[23] Tzankov P, Fiebig T, Buchvarov I. Tunable femtosecond pulses in the near-ultraviolet from ultrabroadband parametric amplification[J]. Applied Physics Letters, 2003, 82(4): 517-519.

[24] Indra L, Batysta F. H íbek P, et al. Picosecond pulse generated supercontinuum as a stable seed for OPCPA[J]. Optics Letters, 2017, 42(4): 843-846.

[25] Alfano RR. The supercontinuum laser source[M]. 3rd ed. New York: Springer, 2016.

[26] Gaeta A L. Catastrophic collapse of ultrashort pulses[J]. Physical Review Letters, 2000, 84(16): 3582-3585.

[27] Ward H, Bergé L. Temporal shaping of femtosecond solitary pulses in photoionized media[J]. Physical Review Letters, 2003, 90(5): 053901.

[28] Kandidov V P, Kosareva O G, Golubtsov I S, et al. Self-transformation of a powerful femtosecond laser pulse into a white-light laser pulse in bulk optical media (or supercontinuum generation)[J]. Applied Physics B, 2003, 77(2/3): 149-165.

[29] Rothenberg J E. Space-time focusing: breakdown of the slowly varying envelope approximation in the self-focusing of femtosecond pulses[J]. Optics Letters, 1992, 17(19): 1340-1342.

[30] Bloembergen N. The influence of electron plasma formation on superbroadening in light filaments[J]. Optics Communications, 1973, 8(4): 285-288.

[31] Kolesik M, Katona G, Moloney J V, et al. Theory and simulation of supercontinuum generation in transparent bulk media[J]. Applied Physics B, 2003, 77(2/3): 185-195.

[32] Huber R, Satzger H, Zinth W, et al. Noncollinear optical parametric amplifiers with output parameters improved by the application of a white light continuum generated in CaF2[J]. Optics Communications, 2001, 194(4/5/6): 443-448.

[33] Tzankov P, Buchvarov I, Fiebig T. Broadband optical parametric amplification in the near UV-VIS[J]. Optics Communications, 2002, 203(1/2): 107-113.

[34] Buchvarov I, Trifonov A, Fiebig T. Toward an understanding of white-light generation in cubic media: polarization properties across the entire spectral range[J]. Optics Letters, 2007, 32(11): 1539-1541.

[35] Kartazaev V, Alfano R R. Polarization properties of SC generated in CaF2[J]. Optics Communications, 2008, 281(3): 463-468.

[36] Megerle U, Pugliesi I, Schriever C, et al. Sub-50 fs broadband absorption spectroscopy with tunable excitation: putting the analysis of ultrafast molecular dynamics on solid ground[J]. Applied Physics B, 2009, 96(2/3): 215-231.

[37] Liu W, Petit S, Becker A, et al. Intensity clamping of a femtosecond laser pulse in condensed matter[J]. Optics Communications, 2002, 202(1/2/3): 189-197.

[38] Pogatshnik G J, Hamilton D S. Excited-state photoionization of Ce + ions in Ce +∶CaF2[J]. Physical Review B, 1987, 36(16): 8251-8257.

[39] Scouler W J, Smakula A. Coloration of pure and doped calcium fluoride crystals at 20 ℃ and -190 ℃[J]. Physical Review, 1960, 120(4): 1154-1161.

[40] Faccio D, Porras M A, Dubietis A, et al. Conical emission, pulse splitting, and X-wave parametric amplification in nonlinear dynamics of ultrashort light pulses[J]. Physical Review Letters, 2006, 96(19): 193901.

[41] Gong C, Li Z X, Hua L Q, et al. Angle-resolved conical emission spectra from filamentation in a solid with an Airy pattern and a Gaussian laser beam[J]. Optics Letters, 2016, 41(18): 4305-4308.

[42] Luther G G, Wright E M, Newell A C, et al. Short-pulse conical emission and spectral broadening in normally dispersive media[J]. Optics Letters, 1994, 19(11): 789-791.

[43] Nagura C, Suda A, Kawano H, et al. Generation and characterization of ultrafast white-light continuum in condensed media[J]. Applied Optics, 2002, 41(18): 3735-3742.

[44] Brodeur A, Chin S L. Band-gap dependence of the ultrafast white-light continuum[J]. Physical Review Letters, 1998, 80(20): 4406-4409.

[45] DeSalvo R, Sheik-Bahae M, Said A A, et al. . Z-scan measurements of the anisotropy of nonlinear refraction and absorption in crystals[J]. Optics Letters, 1993, 18(3): 194-196.