[1] DRESCHER M, HENTSCHE M, KIENBERGER R, et al. Time-resolved atomic inner-shell spectroscopy ［J］. Nature, 2002, 419(6909): 803-807.

[2] UIBERACKER M, UPHUES T, SCHULTZE M, et al. Attosecond real-time observation of electron tunnelling in atoms ［J］. Nature, 2007, 446(7136): 627-632.

[3] FENG L Q, LIU H, LIU H. Spatial distribution of harmonic spectra from H+2 in the presence of spatial homogeneous and inhomogeneous field ［J］. Laser Technology, 2017, 41(4): 467-472 (in Chinese).

[4] LIU H, FENG L Q. Mid-infrared field phase measurement and attosecond pulse generation ［J］. Laser Technology, 2017, 41(2): 151-158 (in Chinese).

[5] LIU H, LI Y, YAO Z, FENG L Q. Chirp pulse control on harmonic cutoff and harmonic intensity ［J］. Laser Technology, 2017, 41(5): 708-711 (in Chinese).

[6] ZENG Z, CHENG Y, SONG X, et al. Generation of an extreme ultraviolet supercontinuum in a two-color laser field ［J］. Physical Review Letters, 2007, 98(20): 203901.

[7] CORKUM P B. Plasma perspective on strong field multiphoton ionization ［J］. Physical Review Letters, 1993, 71(13): 1994-1997.

[8] MAIRESSE Y, BOHAN A D, FRASINSKI L J, et al. Attosecond synchronization of high-harmonic soft x-rays ［J］. Science, 2003, 302(5650): 1540-1543.

[9] GOULIELMAKIS E, SCHULTZE M, HOFSTETTER M, et al. Single-cycle nonlinear optics ［J］. Science, 2008, 320(5883): 1614-1617.

[10] FENG L Q, CHU T S. Generation of an isolated sub-40as pulse using two-color laser pulses: Combined chirp effects ［J］. Physical Review, 2011, A84(5): 053853.

[11] FENG L Q, CHU T S. High-order harmonics extension and isolated attosecond pulse generation in three-color field: Controlling factors ［J］. Physical Letters, 2011, A375(41):3641-3648.

[12] SANSONE G, BENEDETTI E, CALEGARI F, et al. Isolated single-cycle attosecond pulses ［J］. Science, 2006, 314(5798): 443-446.

[13] DU H C, HU B T. Broadband supercontinuum generation method combining mid-infrared chirped-pulse modulation and generalized polarization gating ［J］. Optics Express, 2010, 18(25): 25958-25966.

[14] ZHANG Q B, LU P X, LAN P F, et al. Multi-cycle laser-driven broadband supercontinuum with a modulated polarization gating ［J］. Optics Express, 2008, 16(13): 9795-9803.

[15] FENG L Q. Improved polarization gating scheme on attosecond source generation ［J］. Spectroscopy Letters, 2016, 49(5): 367-374.

[16] ZHAO K, ZHANG Q, CHINI M, et al. Tailoring a 67 attosecond pulse through advantageous phase mismatch ［J］. Optics Letters, 2012, 37(18): 3891-3893.

[17] KIM S, JIN J, KIM Y J, et al. High-harmonic generation by resonant plasmon field enhancement ［J］. Nature, 2008, 453(7196): 757-760.

[18] YAVUZ I. Gas population effects in harmonic emission by plasmonic fields ［J］. Physical Review, 2013, A87(5): 053815.

[19] FENG L Q. Molecular harmonic extension and enhancement from H+2 ions in the presence of spatially inhomogeneous fields ［J］. Physical Review, 2015, A92(5): 053832.

[20] CAO X, JIANG S C, YU C, et al. Generation of isolated sub-10 attosecond pulses in spatially inhomogenous two-color fields ［J］. Optics Express, 2014, 22(21): 26153-26161.

[21] LU R F, ZHANG P Y, HAN K L. Attosecond-resolution quantum dynamics calculations for atoms and molecules in strong laser fields ［J］. Physical Review, 2008, E77(6): 066701.

[22] HU J, HAN K L, HE G Z. Correlation quantum dynamics between an electron and D+2 molecule with attosecond resolution ［J］. Physical Review Letters, 2005, 95(12): 123001.

[23] XUE S, DU H C, XIA Y, et al. Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields ［J］. Chinese Physics, 2015, B24(5): 054210.

[24] ANTOINE P, PIRAUX B, MAQUET A. Time profile of harmonics generated by a single atom in a strong electromagnetic field ［J］. Physical Review, 1995, A51(3):R1750-R1753.

[25] FENG L Q, CHU T S. Intensity enhancement in attosecond pulse generation ［J］. IEEE Journal of Quantum Electronics, 2012, 48(11): 1462-1466.

[26] LIU Q B. Laser processing technology and its application［M］. Beijing: Metallurgical Industry Press, 2007:4-6 (in Chinese).

[27] ZANG Y N, NI X W, HAN B. The ejection of molten aluminum after the interaction with millisecond pulsed laser［J］. Journal of Optics, 2017, 46(3): 231-240.

[28] WEI Z, ZHANG W, WANG D, et al. Structural, optical and electrical behavior of millisecond pulse laser damaged silicon-based positive intrinsic negative photodiode［J］. Optik—International Journal for Light and Electron Optics, 2017, 131(sC): 110-115.

[29] JIA Zh X, HUANG J G, GAO J Q, et al. Technological study on long pulse laser cutting of polycrystalline cubic boron nitride［J］. Laser Technology, 2017, 41(3): 346-350(in Chinese).

[30] SCHNEIDER M, BERTHE L, FABBRO R, et al. Gas investigation for laser drilling［J］. Journal of Laser Applications, 2007, 19(3): 165-169.

[31] ZANG Y N, NI X W, HAN B. The ejection threshold of molten aluminum induced by millisecond pulsed laser［J］. Journal of Applied Physics, 2014, 116(1): 013104.

[32] HE X L, DEBROY T, FUERSCHBACH P W. Alloying element vaporization during laser spot welding of stainless steel［J］. Journal of Physics, 2003, D36(23): 3079-3088.

[33] HE X L, NORRIS J, FUERSCHBACH P, et al. Liquid metal expulsion during laser spot welding of 304 stainless steel［J］. Journal of Physics, 2006, D39(3): 525-534.

[34] SEMAK V, MATSUNAWA A. The role of recoil pressure in energy balance during laser materials processing［J］. Journal of Physics, 1997, D30(18): 2541-2552.

[35] KELLY R, MIOTELLO A. Comments on explosive mechanisms of laser sputtering［J］. Applied Surface Science, 1996, 96: 205-215.

[36] CHO J H, NA S J. Implementation of real time multiple reflection and Fresnel absorption of laser beam in keyhole［J］. Journal of Physics, 2006, D39(24): 5372-5378.

[37] ZHANG Y M, SHEN Zh H, NI X W. Modeling and simulation on long pulse laser drilling processing［J］. International Journal of Heat and Mass Transfer, 2014, 73: 429-437.

[38] LU Q M, MAO S S, MAO X L, et al. Theory analysis of wavelength dependence of laser-induced phase explosion of silicon［J］. Journal of Applied Physics, 2008, 104(8): 083301.

[39] LU Zh Q. Two-phase flow and boiling heat transfer［M］. Beijing: Tsinghua University Press, 2002: 146-158 (in Chinese).

[40] XU J Y, JIA D N. The boiling heat transfer and gas-liquid two phase flow［M］. Beijing:Atomic Energy Press, 2001:201-233 (in Chinese).

[41] TAKASUKA E, TOKIZAKI E, TERASHIMA K, et al. Emissivity of liquid silicon in visible and infrared regions［J］. Journal of Applied Physics, 1997, 81(9): 6384-6384.

[42] HIRANO K, FABBRO R, MULLER M. Experimental determination of temperature threshold for melt surface deformation during laser interaction on iron at atmospheric pressure［J］. Journal of Physics, 2011, D44(43): 435402.

[43] MOSTOVYCH A N, CHAN Y. Reflective probing of the electrical conductivity of hot aluminum in the solid, liquid, and plasma phases［J］. Physical Review Letters, 1997, 79(25): 5094-5097.