Abstract

We present a theoretical investigation of high-order harmonic generation in spatially inhomogeneous two-color laser fields by solving three dimensional time dependent Schrödinger equation. The cutoff in the harmonic spectra can be significantly extended by means of our proposed method (i.e., from helium interacting with the plasmon-enhanced two-color laser fields), and an ultrabroad supercontinuum up to 1.5 keV is generated by selecting proper carrier-envelope phase of the controlling field. Moreover, classical trajectory extraction, time-dependent ionization and recombination rates, and time-frequency analyses are used to explain the generation of this ultrabroadband supercontinuum. As a result, an isolated 8.8 attosecond pulse can be generated directly by the superposition of the supercontinuum harmonics.

© 2014 Optical Society of America

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References

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2014 (4)

P. C. Li, C. Laughlin, and S. I. Chu, “Generation of isolated sub-20-attosecond pulses from He atoms by two-color midinfrared laser fields,” Phys. Rev. A 89(2), 023431 (2014).
[Crossref]

X. Y. Miao and C. P. Zhang, “Multichannel recombination in high-order-harmonic generation from asymmetric molecular ions,” Phys. Rev. A 89(3), 033410 (2014).
[Crossref]

C. Yu, H. X. He, Y. H. Wang, Q. Shi, Y. D. Zhang, and R. F. Lu, “Intense attosecond pulse generated from a molecular harmonic plateau of H2+ in mid-infrared laser fields,” J. Phys. At. Mol. Opt. Phys. 47(5), 055601 (2014).
[Crossref]

C. Jin, G. L. Wang, H. Wei, A. T. Le, and C. D. Lin, “Waveforms for optimal sub-keV high-order harmonics with synthesized two- or three-colour laser fields,” Nat Commun 5, 4003 (2014).
[Crossref] [PubMed]

2013 (10)

Y. Y. Yang, A. Scrinzi, A. Husakou, Q. G. Li, S. L. Stebbings, F. Süßmann, H. J. Yu, S. Kim, E. Rühl, J. Herrmann, X. C. Lin, and M. F. Kling, “High-harmonic and single attosecond pulse generation using plasmonic field enhancement in ordered arrays of gold nanoparticles with chirped laser pulses,” Opt. Express 21(2), 2195–2205 (2013).
[Crossref] [PubMed]

H. C. Du, Y. Z. Wen, X. S. Wang, and B. T. Hu, “Intense supercontinuum generation exceeding 300eV using a two-color field in combination with a 400-nm few-cycle control pulse,” Opt. Express 21(18), 21337–21348 (2013).
[Crossref] [PubMed]

L. Q. Feng and T. S. Chu, “Role of excited states in asymmetric harmonic emission,” Commun. Comput. Chem. 1, 52–62 (2013).

X. Y. Miao and H. N. Du, “Theoretical study of high-order-harmonic generation from asymmetric diatomic molecules,” Phys. Rev. A 87(5), 053403 (2013).
[Crossref]

C. L. Xia and X. S. Liu, “Quantum path control and isolated attosecond pulse generation with the combination of two circularly polarized laser pulses,” Phys. Rev. A 87(4), 043406 (2013).
[Crossref]

Z. Wang, P. Lan, J. Luo, L. He, Q. Zhang, and P. Lu, “Control of electron dynamics with a multicycle two-color spatially inhomogeneous field for efficient single-attosecond-pulse generation,” Phys. Rev. A 88(6), 063838 (2013).
[Crossref]

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Extreme-ultraviolet light generation in plasmonic nanostructures,” Nat. Phys. 9(5), 304–309 (2013).
[Crossref]

M. Sivis and C. Ropers, “Generation and bistability of a waveguide nanoplasma observed by enhanced extreme-ultraviolet fluorescence,” Phys. Rev. Lett. 111(8), 085001 (2013).
[Crossref] [PubMed]

K. J. Yuan and A. D. Bandrauk, “Single circularly polarized attosecond pulse generation by intense few cycle elliptically polarized laser pulses and terahertz fields from molecular media,” Phys. Rev. Lett. 110(2), 023003 (2013).
[Crossref] [PubMed]

J. A. Pérez-Hernández, M. F. Ciappina, M. Lewenstein, L. Roso, and A. Zaïr, “Beyond carbon K-edge harmonic emission using a spatial and temporal synthesized laser field,” Phys. Rev. Lett. 110(5), 053001 (2013).
[Crossref] [PubMed]

2012 (13)

I. Yavuz, E. A. Bleda, Z. Altun, and T. Topcu, “Generation of a broadband xuv continuum in high-order-harmonic generation by spatially inhomogeneous fields,” Phys. Rev. A 85(1), 013416 (2012).
[Crossref]

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Nanostructure-enhanced atomic line emission,” Nature 485(7397), E1–E2, discussion E2–E3 (2012).
[Crossref] [PubMed]

M. F. Ciappina, J. Biegert, R. Quidant, and M. Lewenstein, “High-order-harmonic generation from inhomogeneous fields,” Phys. Rev. A 85(3), 033828 (2012).
[Crossref]

G. Herink, D. R. Solli, M. Gulde, and C. Ropers, “Field-driven photoemission from nanostructures quenches the quiver motion,” Nature 483(7388), 190–193 (2012).
[Crossref] [PubMed]

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
[Crossref]

C. L. Xia, X. L. Ge, X. Zhao, J. Guo, and X. S. Liu, “Isolated attosecond pulse generation from a model of Ar+ cluster in a synthesized two-color laser pulse,” Phys. Rev. A 85(2), 025802 (2012).
[Crossref]

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Dissociation and ionization competing processes for H2+ in intense laser field: Which one is larger?” J. Chem. Phys. 136(2), 024311 (2012).
[Crossref] [PubMed]

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Direct multi-photon ionizations of H2+ in intense laser fields,” J. Phys. At. Mol. Opt. Phys. 45(8), 085103 (2012).
[Crossref]

H. C. Du, L. Y. Luo, X. S. Wang, and B. T. Hu, “Isolated attosecond pulse generation from pre-excited medium with a chirped and chirped-free two-color field,” Opt. Express 20(9), 9713–9725 (2012).
[Crossref] [PubMed]

M. F. Ciappina, S. S. Aćimović, T. Shaaran, J. Biegert, R. Quidant, and M. Lewenstein, “Enhancement of high harmonic generation by confining electron motion in plasmonic nanostrutures,” Opt. Express 20(24), 26261–26274 (2012).
[Crossref] [PubMed]

H. C. Du, L. Y. Luo, X. S. Wang, and B. T. Hu, “Attosecond ionization control for broadband supercontinuum generation using a weak 400-nm few-cycle controlling pulse,” Opt. Express 20(24), 27226–27241 (2012).
[Crossref] [PubMed]

L. Q. Feng and T. S. Chu, “Nuclear signatures on the molecular harmonic emission and the attosecond pulse generation,” J. Chem. Phys. 136(5), 054102 (2012).
[Crossref] [PubMed]

2011 (5)

H. X. He, R. F. Lu, P. Y. Zhang, Y. H. Guo, K. L. Han, and G. Z. He, “Theoretical investigation of the origin of the multipeak structure of kinetic-energy-release spectra from charge-resonance-enhanced ionization of H2+ in intense laser fields,” Phys. Rev. A 84(3), 033418 (2011).
[Crossref]

L. Q. Feng and T. S. Chu, “Generation of an isolated sub-40-as pulse using two-color laser pulses: Combined chirp effects,” Phys. Rev. A 84(5), 053853 (2011).
[Crossref]

M. Krüger, M. Schenk, and P. Hommelhoff, “Attosecond control of electrons emitted from a nanoscale metal tip,” Nature 475(7354), 78–81 (2011).
[Crossref] [PubMed]

I. Y. Park, S. Kim, J. Choi, D. H. Lee, Y. J. Kim, M. F. Kling, M. I. Stockman, and S. W. Kim, “Plasmonic generation of ultrashort extreme-ultraviolet light pulses,” Nat. Photonics 5(11), 677–681 (2011).
[Crossref]

A. Husakou, S. J. Im, and J. Herrmann, “Theory of plasmon-enhanced high-order harmonic generation in the vicinity of metal nanostructures in noble gases,” Phys. Rev. A 83(4), 043839 (2011).
[Crossref]

2009 (4)

A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
[Crossref] [PubMed]

A. T. Le, R. R. Lucchese, M. T. Lee, and C. D. Lin, “Probing molecular frame photoionization via laser generated high-order harmonics from aligned molecules,” Phys. Rev. Lett. 102(20), 203001 (2009).
[Crossref] [PubMed]

F. Krausz and M. Ivanov, “Attosecond physics,” Rev. Mod. Phys. 81(1), 163–234 (2009).
[Crossref]

R. F. Lu, H. X. He, Y. H. Guo, and K. L. Han, “Theoretical study of single attosecond pulse generation with a three-colour laser field,” J. Phys. At. Mol. Opt. Phys. 42(22), 225601 (2009).
[Crossref]

2008 (5)

R. F. Lu, P. Y. Zhang, and K. L. Han, “Attosecond-resolution quantum dynamics calculations for atoms and molecules in strong laser fields,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys. 77(6), 066701 (2008).
[Crossref] [PubMed]

C. Winterfeldt, C. Spielmann, and G. Gerber, “Colloquium: Optimal control of high-harmonic generation,” Rev. Mod. Phys. 80(1), 117–140 (2008).
[Crossref]

E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
[Crossref] [PubMed]

S. Kim, J. H. Jin, Y. J. Kim, I. Y. Park, Y. Kim, and S. W. Kim, “High-harmonic generation by resonant plasmon field enhancement,” Nature 453(7196), 757–760 (2008).
[Crossref] [PubMed]

M. V. Frolov, N. L. Manakov, and A. F. Starace, “Wavelength scaling of high-harmonic yield: threshold phenomena and bound state symmetry dependence,” Phys. Rev. Lett. 100(17), 173001 (2008).
[Crossref] [PubMed]

2007 (2)

J. Tate, T. Auguste, H. G. Muller, P. Salières, P. Agostini, and L. F. DiMauro, “Scaling of wave-packet dynamics in an intense midinfrared field,” Phys. Rev. Lett. 98(1), 013901 (2007).
[Crossref] [PubMed]

Z. N. Zeng, Y. Cheng, X. H. Song, R. X. Li, and Z. Z. Xu, “Generation of an extreme ultraviolet supercontinuum in a two-color laser field,” Phys. Rev. Lett. 98(20), 203901 (2007).
[Crossref] [PubMed]

2006 (4)

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, “Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation,” Phys. Rev. Lett. 97(16), 163901 (2006).
[Crossref] [PubMed]

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

M. Vafaee, H. Sabzyan, Z. Vafaee, and A. Katanforoush, “Detailed instantaneous ionization rate of H2+ in an intense laser field,” Phys. Rev. A 74(4), 043416 (2006).
[Crossref]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, “Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field,” Opt. Lett. 31(7), 975–977 (2006).
[Crossref] [PubMed]

2005 (2)

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, “Improving the mismatch between light and nanoscale objects with gold bowtie nanoantennas,” Phys. Rev. Lett. 94(1), 017402 (2005).
[Crossref] [PubMed]

J. Hu, K. L. Han, and G. Z. He, “Correlation quantum dynamics between an electron and D2+ molecule with attosecond resolution,” Phys. Rev. Lett. 95(12), 123001 (2005).
[Crossref] [PubMed]

2001 (3)

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, “Observation of a train of attosecond pulses from high harmonic generation,” Science 292(5522), 1689–1692 (2001).
[Crossref] [PubMed]

M. Hentschel, R. Kienberger, C. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, “Attosecond metrology,” Nature 414(6863), 509–513 (2001).
[Crossref] [PubMed]

X. Chu and Sh. I. Chu, “Optimization of high-order harmonic generation by genetic algorithm and wavelet time-frequency analysis of quantum dipole emission,” Phys. Rev. 64(2), 021403 (2001).
[Crossref]

2000 (2)

X. M. Tong and Sh. I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. 61(2), 021802 (2000).
[Crossref]

A. D. Bandrauk and H. Z. Lu, “Enhanced ionization of the molecular ion H2+ in intense laser and static magnetic fields,” Phys. Rev. A 62(5), 053406 (2000).
[Crossref]

1994 (1)

S. Watanabe, K. Kondo, Y. Nabekawa, A. Sagisaka, and Y. Kobayashi, “Two-color phase control in tunneling ionization and harmonic generation by a strong laser field and its third harmonic,” Phys. Rev. Lett. 73(20), 2692–2695 (1994).
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1993 (2)

P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett. 71(13), 1994–1997 (1993).
[Crossref] [PubMed]

K. J. Schafer, B. R. Yang, L. F. DiMauro, and K. C. Kulander, “Above threshold ionization beyond the high harmonic cutoff,” Phys. Rev. Lett. 70(11), 1599–1602 (1993).
[Crossref] [PubMed]

Abel, B.

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Extreme-ultraviolet light generation in plasmonic nanostructures,” Nat. Phys. 9(5), 304–309 (2013).
[Crossref]

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Nanostructure-enhanced atomic line emission,” Nature 485(7397), E1–E2, discussion E2–E3 (2012).
[Crossref] [PubMed]

Abel, M. J.

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, “Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation,” Phys. Rev. Lett. 97(16), 163901 (2006).
[Crossref] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, “Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field,” Opt. Lett. 31(7), 975–977 (2006).
[Crossref] [PubMed]

Acimovic, S. S.

Agostini, P.

J. Tate, T. Auguste, H. G. Muller, P. Salières, P. Agostini, and L. F. DiMauro, “Scaling of wave-packet dynamics in an intense midinfrared field,” Phys. Rev. Lett. 98(1), 013901 (2007).
[Crossref] [PubMed]

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, “Observation of a train of attosecond pulses from high harmonic generation,” Science 292(5522), 1689–1692 (2001).
[Crossref] [PubMed]

Altucci, C.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
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Altun, Z.

I. Yavuz, E. A. Bleda, Z. Altun, and T. Topcu, “Generation of a broadband xuv continuum in high-order-harmonic generation by spatially inhomogeneous fields,” Phys. Rev. A 85(1), 013416 (2012).
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E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
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E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
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Auge, F.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, “Observation of a train of attosecond pulses from high harmonic generation,” Science 292(5522), 1689–1692 (2001).
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J. Tate, T. Auguste, H. G. Muller, P. Salières, P. Agostini, and L. F. DiMauro, “Scaling of wave-packet dynamics in an intense midinfrared field,” Phys. Rev. Lett. 98(1), 013901 (2007).
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G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Balcou, Ph.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, “Observation of a train of attosecond pulses from high harmonic generation,” Science 292(5522), 1689–1692 (2001).
[Crossref] [PubMed]

Bandrauk, A. D.

K. J. Yuan and A. D. Bandrauk, “Single circularly polarized attosecond pulse generation by intense few cycle elliptically polarized laser pulses and terahertz fields from molecular media,” Phys. Rev. Lett. 110(2), 023003 (2013).
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A. D. Bandrauk and H. Z. Lu, “Enhanced ionization of the molecular ion H2+ in intense laser and static magnetic fields,” Phys. Rev. A 62(5), 053406 (2000).
[Crossref]

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A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
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Benedetti, E.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Biegert, J.

Bleda, E. A.

I. Yavuz, E. A. Bleda, Z. Altun, and T. Topcu, “Generation of a broadband xuv continuum in high-order-harmonic generation by spatially inhomogeneous fields,” Phys. Rev. A 85(1), 013416 (2012).
[Crossref]

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M. Hentschel, R. Kienberger, C. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, “Attosecond metrology,” Nature 414(6863), 509–513 (2001).
[Crossref] [PubMed]

Breger, P.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, “Observation of a train of attosecond pulses from high harmonic generation,” Science 292(5522), 1689–1692 (2001).
[Crossref] [PubMed]

Calegari, F.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Chen, Y.

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
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Cheng, Y.

Z. N. Zeng, Y. Cheng, X. H. Song, R. X. Li, and Z. Z. Xu, “Generation of an extreme ultraviolet supercontinuum in a two-color laser field,” Phys. Rev. Lett. 98(20), 203901 (2007).
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Choi, J.

I. Y. Park, S. Kim, J. Choi, D. H. Lee, Y. J. Kim, M. F. Kling, M. I. Stockman, and S. W. Kim, “Plasmonic generation of ultrashort extreme-ultraviolet light pulses,” Nat. Photonics 5(11), 677–681 (2011).
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Chu, S. I.

P. C. Li, C. Laughlin, and S. I. Chu, “Generation of isolated sub-20-attosecond pulses from He atoms by two-color midinfrared laser fields,” Phys. Rev. A 89(2), 023431 (2014).
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Chu, Sh. I.

X. Chu and Sh. I. Chu, “Optimization of high-order harmonic generation by genetic algorithm and wavelet time-frequency analysis of quantum dipole emission,” Phys. Rev. 64(2), 021403 (2001).
[Crossref]

X. M. Tong and Sh. I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. 61(2), 021802 (2000).
[Crossref]

Chu, T. S.

L. Q. Feng and T. S. Chu, “Role of excited states in asymmetric harmonic emission,” Commun. Comput. Chem. 1, 52–62 (2013).

L. Q. Feng and T. S. Chu, “Nuclear signatures on the molecular harmonic emission and the attosecond pulse generation,” J. Chem. Phys. 136(5), 054102 (2012).
[Crossref] [PubMed]

L. Q. Feng and T. S. Chu, “Generation of an isolated sub-40-as pulse using two-color laser pulses: Combined chirp effects,” Phys. Rev. A 84(5), 053853 (2011).
[Crossref]

Chu, X.

X. Chu and Sh. I. Chu, “Optimization of high-order harmonic generation by genetic algorithm and wavelet time-frequency analysis of quantum dipole emission,” Phys. Rev. 64(2), 021403 (2001).
[Crossref]

Ciappina, M. F.

J. A. Pérez-Hernández, M. F. Ciappina, M. Lewenstein, L. Roso, and A. Zaïr, “Beyond carbon K-edge harmonic emission using a spatial and temporal synthesized laser field,” Phys. Rev. Lett. 110(5), 053001 (2013).
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M. F. Ciappina, J. Biegert, R. Quidant, and M. Lewenstein, “High-order-harmonic generation from inhomogeneous fields,” Phys. Rev. A 85(3), 033828 (2012).
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M. F. Ciappina, S. S. Aćimović, T. Shaaran, J. Biegert, R. Quidant, and M. Lewenstein, “Enhancement of high harmonic generation by confining electron motion in plasmonic nanostrutures,” Opt. Express 20(24), 26261–26274 (2012).
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Comtois, D.

A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
[Crossref] [PubMed]

Corkum, P.

M. Hentschel, R. Kienberger, C. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, “Attosecond metrology,” Nature 414(6863), 509–513 (2001).
[Crossref] [PubMed]

Corkum, P. B.

A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
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P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett. 71(13), 1994–1997 (1993).
[Crossref] [PubMed]

De Silvestri, S.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Deng, K. M.

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

DiMauro, L. F.

J. Tate, T. Auguste, H. G. Muller, P. Salières, P. Agostini, and L. F. DiMauro, “Scaling of wave-packet dynamics in an intense midinfrared field,” Phys. Rev. Lett. 98(1), 013901 (2007).
[Crossref] [PubMed]

K. J. Schafer, B. R. Yang, L. F. DiMauro, and K. C. Kulander, “Above threshold ionization beyond the high harmonic cutoff,” Phys. Rev. Lett. 70(11), 1599–1602 (1993).
[Crossref] [PubMed]

Drescher, M.

M. Hentschel, R. Kienberger, C. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, “Attosecond metrology,” Nature 414(6863), 509–513 (2001).
[Crossref] [PubMed]

Du, H. C.

Du, H. N.

X. Y. Miao and H. N. Du, “Theoretical study of high-order-harmonic generation from asymmetric diatomic molecules,” Phys. Rev. A 87(5), 053403 (2013).
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Duwe, M.

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Extreme-ultraviolet light generation in plasmonic nanostructures,” Nat. Phys. 9(5), 304–309 (2013).
[Crossref]

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Nanostructure-enhanced atomic line emission,” Nature 485(7397), E1–E2, discussion E2–E3 (2012).
[Crossref] [PubMed]

Feng, L. Q.

L. Q. Feng and T. S. Chu, “Role of excited states in asymmetric harmonic emission,” Commun. Comput. Chem. 1, 52–62 (2013).

L. Q. Feng and T. S. Chu, “Nuclear signatures on the molecular harmonic emission and the attosecond pulse generation,” J. Chem. Phys. 136(5), 054102 (2012).
[Crossref] [PubMed]

L. Q. Feng and T. S. Chu, “Generation of an isolated sub-40-as pulse using two-color laser pulses: Combined chirp effects,” Phys. Rev. A 84(5), 053853 (2011).
[Crossref]

Flammini, R.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Frolov, M. V.

M. V. Frolov, N. L. Manakov, and A. F. Starace, “Wavelength scaling of high-harmonic yield: threshold phenomena and bound state symmetry dependence,” Phys. Rev. Lett. 100(17), 173001 (2008).
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Fromm, D. P.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, “Improving the mismatch between light and nanoscale objects with gold bowtie nanoantennas,” Phys. Rev. Lett. 94(1), 017402 (2005).
[Crossref] [PubMed]

Gagnon, J.

E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
[Crossref] [PubMed]

Gallmann, L.

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, “Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field,” Opt. Lett. 31(7), 975–977 (2006).
[Crossref] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, “Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation,” Phys. Rev. Lett. 97(16), 163901 (2006).
[Crossref] [PubMed]

Ge, X. L.

C. L. Xia, X. L. Ge, X. Zhao, J. Guo, and X. S. Liu, “Isolated attosecond pulse generation from a model of Ar+ cluster in a synthesized two-color laser pulse,” Phys. Rev. A 85(2), 025802 (2012).
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Gerber, G.

C. Winterfeldt, C. Spielmann, and G. Gerber, “Colloquium: Optimal control of high-harmonic generation,” Rev. Mod. Phys. 80(1), 117–140 (2008).
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Giguère, M.

A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
[Crossref] [PubMed]

Goulielmakis, E.

E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
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Gulde, M.

G. Herink, D. R. Solli, M. Gulde, and C. Ropers, “Field-driven photoemission from nanostructures quenches the quiver motion,” Nature 483(7388), 190–193 (2012).
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Gullikson, E. M.

E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
[Crossref] [PubMed]

Guo, J.

C. L. Xia, X. L. Ge, X. Zhao, J. Guo, and X. S. Liu, “Isolated attosecond pulse generation from a model of Ar+ cluster in a synthesized two-color laser pulse,” Phys. Rev. A 85(2), 025802 (2012).
[Crossref]

Guo, Y. H.

H. X. He, R. F. Lu, P. Y. Zhang, Y. H. Guo, K. L. Han, and G. Z. He, “Theoretical investigation of the origin of the multipeak structure of kinetic-energy-release spectra from charge-resonance-enhanced ionization of H2+ in intense laser fields,” Phys. Rev. A 84(3), 033418 (2011).
[Crossref]

R. F. Lu, H. X. He, Y. H. Guo, and K. L. Han, “Theoretical study of single attosecond pulse generation with a three-colour laser field,” J. Phys. At. Mol. Opt. Phys. 42(22), 225601 (2009).
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Han, K. L.

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Dissociation and ionization competing processes for H2+ in intense laser field: Which one is larger?” J. Chem. Phys. 136(2), 024311 (2012).
[Crossref] [PubMed]

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Direct multi-photon ionizations of H2+ in intense laser fields,” J. Phys. At. Mol. Opt. Phys. 45(8), 085103 (2012).
[Crossref]

H. X. He, R. F. Lu, P. Y. Zhang, Y. H. Guo, K. L. Han, and G. Z. He, “Theoretical investigation of the origin of the multipeak structure of kinetic-energy-release spectra from charge-resonance-enhanced ionization of H2+ in intense laser fields,” Phys. Rev. A 84(3), 033418 (2011).
[Crossref]

R. F. Lu, H. X. He, Y. H. Guo, and K. L. Han, “Theoretical study of single attosecond pulse generation with a three-colour laser field,” J. Phys. At. Mol. Opt. Phys. 42(22), 225601 (2009).
[Crossref]

R. F. Lu, P. Y. Zhang, and K. L. Han, “Attosecond-resolution quantum dynamics calculations for atoms and molecules in strong laser fields,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys. 77(6), 066701 (2008).
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J. Hu, K. L. Han, and G. Z. He, “Correlation quantum dynamics between an electron and D2+ molecule with attosecond resolution,” Phys. Rev. Lett. 95(12), 123001 (2005).
[Crossref] [PubMed]

He, G. Z.

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Direct multi-photon ionizations of H2+ in intense laser fields,” J. Phys. At. Mol. Opt. Phys. 45(8), 085103 (2012).
[Crossref]

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Dissociation and ionization competing processes for H2+ in intense laser field: Which one is larger?” J. Chem. Phys. 136(2), 024311 (2012).
[Crossref] [PubMed]

H. X. He, R. F. Lu, P. Y. Zhang, Y. H. Guo, K. L. Han, and G. Z. He, “Theoretical investigation of the origin of the multipeak structure of kinetic-energy-release spectra from charge-resonance-enhanced ionization of H2+ in intense laser fields,” Phys. Rev. A 84(3), 033418 (2011).
[Crossref]

J. Hu, K. L. Han, and G. Z. He, “Correlation quantum dynamics between an electron and D2+ molecule with attosecond resolution,” Phys. Rev. Lett. 95(12), 123001 (2005).
[Crossref] [PubMed]

He, H. X.

C. Yu, H. X. He, Y. H. Wang, Q. Shi, Y. D. Zhang, and R. F. Lu, “Intense attosecond pulse generated from a molecular harmonic plateau of H2+ in mid-infrared laser fields,” J. Phys. At. Mol. Opt. Phys. 47(5), 055601 (2014).
[Crossref]

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Direct multi-photon ionizations of H2+ in intense laser fields,” J. Phys. At. Mol. Opt. Phys. 45(8), 085103 (2012).
[Crossref]

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J. A. Pérez-Hernández, M. F. Ciappina, M. Lewenstein, L. Roso, and A. Zaïr, “Beyond carbon K-edge harmonic emission using a spatial and temporal synthesized laser field,” Phys. Rev. Lett. 110(5), 053001 (2013).
[Crossref] [PubMed]

Rühl, E.

Sabzyan, H.

M. Vafaee, H. Sabzyan, Z. Vafaee, and A. Katanforoush, “Detailed instantaneous ionization rate of H2+ in an intense laser field,” Phys. Rev. A 74(4), 043416 (2006).
[Crossref]

Sagisaka, A.

S. Watanabe, K. Kondo, Y. Nabekawa, A. Sagisaka, and Y. Kobayashi, “Two-color phase control in tunneling ionization and harmonic generation by a strong laser field and its third harmonic,” Phys. Rev. Lett. 73(20), 2692–2695 (1994).
[Crossref] [PubMed]

Salières, P.

J. Tate, T. Auguste, H. G. Muller, P. Salières, P. Agostini, and L. F. DiMauro, “Scaling of wave-packet dynamics in an intense midinfrared field,” Phys. Rev. Lett. 98(1), 013901 (2007).
[Crossref] [PubMed]

Sansone, G.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Schafer, K. J.

K. J. Schafer, B. R. Yang, L. F. DiMauro, and K. C. Kulander, “Above threshold ionization beyond the high harmonic cutoff,” Phys. Rev. Lett. 70(11), 1599–1602 (1993).
[Crossref] [PubMed]

Schenk, M.

M. Krüger, M. Schenk, and P. Hommelhoff, “Attosecond control of electrons emitted from a nanoscale metal tip,” Nature 475(7354), 78–81 (2011).
[Crossref] [PubMed]

Schuck, P. J.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, “Improving the mismatch between light and nanoscale objects with gold bowtie nanoantennas,” Phys. Rev. Lett. 94(1), 017402 (2005).
[Crossref] [PubMed]

Schultze, M.

E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
[Crossref] [PubMed]

Scrinzi, A.

Shaaran, T.

Shi, Q.

C. Yu, H. X. He, Y. H. Wang, Q. Shi, Y. D. Zhang, and R. F. Lu, “Intense attosecond pulse generated from a molecular harmonic plateau of H2+ in mid-infrared laser fields,” J. Phys. At. Mol. Opt. Phys. 47(5), 055601 (2014).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
[Crossref]

Shiner, A. D.

A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
[Crossref] [PubMed]

Sivis, M.

M. Sivis and C. Ropers, “Generation and bistability of a waveguide nanoplasma observed by enhanced extreme-ultraviolet fluorescence,” Phys. Rev. Lett. 111(8), 085001 (2013).
[Crossref] [PubMed]

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Extreme-ultraviolet light generation in plasmonic nanostructures,” Nat. Phys. 9(5), 304–309 (2013).
[Crossref]

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Nanostructure-enhanced atomic line emission,” Nature 485(7397), E1–E2, discussion E2–E3 (2012).
[Crossref] [PubMed]

Solli, D. R.

G. Herink, D. R. Solli, M. Gulde, and C. Ropers, “Field-driven photoemission from nanostructures quenches the quiver motion,” Nature 483(7388), 190–193 (2012).
[Crossref] [PubMed]

Song, X. H.

Z. N. Zeng, Y. Cheng, X. H. Song, R. X. Li, and Z. Z. Xu, “Generation of an extreme ultraviolet supercontinuum in a two-color laser field,” Phys. Rev. Lett. 98(20), 203901 (2007).
[Crossref] [PubMed]

Spielmann, C.

C. Winterfeldt, C. Spielmann, and G. Gerber, “Colloquium: Optimal control of high-harmonic generation,” Rev. Mod. Phys. 80(1), 117–140 (2008).
[Crossref]

M. Hentschel, R. Kienberger, C. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, “Attosecond metrology,” Nature 414(6863), 509–513 (2001).
[Crossref] [PubMed]

Stagira, S.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Starace, A. F.

M. V. Frolov, N. L. Manakov, and A. F. Starace, “Wavelength scaling of high-harmonic yield: threshold phenomena and bound state symmetry dependence,” Phys. Rev. Lett. 100(17), 173001 (2008).
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Stebbings, S. L.

Stockman, M. I.

I. Y. Park, S. Kim, J. Choi, D. H. Lee, Y. J. Kim, M. F. Kling, M. I. Stockman, and S. W. Kim, “Plasmonic generation of ultrashort extreme-ultraviolet light pulses,” Nat. Photonics 5(11), 677–681 (2011).
[Crossref]

Sundaramurthy, A.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, “Improving the mismatch between light and nanoscale objects with gold bowtie nanoantennas,” Phys. Rev. Lett. 94(1), 017402 (2005).
[Crossref] [PubMed]

Süßmann, F.

Tate, J.

J. Tate, T. Auguste, H. G. Muller, P. Salières, P. Agostini, and L. F. DiMauro, “Scaling of wave-packet dynamics in an intense midinfrared field,” Phys. Rev. Lett. 98(1), 013901 (2007).
[Crossref] [PubMed]

Toma, E. S.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, “Observation of a train of attosecond pulses from high harmonic generation,” Science 292(5522), 1689–1692 (2001).
[Crossref] [PubMed]

Tong, X. M.

X. M. Tong and Sh. I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. 61(2), 021802 (2000).
[Crossref]

Topcu, T.

I. Yavuz, E. A. Bleda, Z. Altun, and T. Topcu, “Generation of a broadband xuv continuum in high-order-harmonic generation by spatially inhomogeneous fields,” Phys. Rev. A 85(1), 013416 (2012).
[Crossref]

Trallero-Herrero, C.

A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
[Crossref] [PubMed]

Uiberacker, M.

E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
[Crossref] [PubMed]

Vafaee, M.

M. Vafaee, H. Sabzyan, Z. Vafaee, and A. Katanforoush, “Detailed instantaneous ionization rate of H2+ in an intense laser field,” Phys. Rev. A 74(4), 043416 (2006).
[Crossref]

Vafaee, Z.

M. Vafaee, H. Sabzyan, Z. Vafaee, and A. Katanforoush, “Detailed instantaneous ionization rate of H2+ in an intense laser field,” Phys. Rev. A 74(4), 043416 (2006).
[Crossref]

Velotta, R.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Villeneuve, D. M.

A. D. Shiner, C. Trallero-Herrero, N. Kajumba, H. C. Bandulet, D. Comtois, F. Légaré, M. Giguère, J. C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Wavelength scaling of high harmonic generation efficiency,” Phys. Rev. Lett. 103(7), 073902 (2009).
[Crossref] [PubMed]

Villoresi, P.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Vozzi, C.

G. Sansone, E. Benedetti, F. Calegari, C. Vozzi, L. Avaldi, R. Flammini, L. Poletto, P. Villoresi, C. Altucci, R. Velotta, S. Stagira, S. De Silvestri, and M. Nisoli, “Isolated single-cycle attosecond pulses,” Science 314(5798), 443–446 (2006).
[Crossref] [PubMed]

Wang, G. L.

C. Jin, G. L. Wang, H. Wei, A. T. Le, and C. D. Lin, “Waveforms for optimal sub-keV high-order harmonics with synthesized two- or three-colour laser fields,” Nat Commun 5, 4003 (2014).
[Crossref] [PubMed]

Wang, X. S.

Wang, Y. H.

C. Yu, H. X. He, Y. H. Wang, Q. Shi, Y. D. Zhang, and R. F. Lu, “Intense attosecond pulse generated from a molecular harmonic plateau of H2+ in mid-infrared laser fields,” J. Phys. At. Mol. Opt. Phys. 47(5), 055601 (2014).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
[Crossref]

Wang, Z.

Z. Wang, P. Lan, J. Luo, L. He, Q. Zhang, and P. Lu, “Control of electron dynamics with a multicycle two-color spatially inhomogeneous field for efficient single-attosecond-pulse generation,” Phys. Rev. A 88(6), 063838 (2013).
[Crossref]

Watanabe, S.

S. Watanabe, K. Kondo, Y. Nabekawa, A. Sagisaka, and Y. Kobayashi, “Two-color phase control in tunneling ionization and harmonic generation by a strong laser field and its third harmonic,” Phys. Rev. Lett. 73(20), 2692–2695 (1994).
[Crossref] [PubMed]

Wei, H.

C. Jin, G. L. Wang, H. Wei, A. T. Le, and C. D. Lin, “Waveforms for optimal sub-keV high-order harmonics with synthesized two- or three-colour laser fields,” Nat Commun 5, 4003 (2014).
[Crossref] [PubMed]

Wen, Y. Z.

Winterfeldt, C.

C. Winterfeldt, C. Spielmann, and G. Gerber, “Colloquium: Optimal control of high-harmonic generation,” Rev. Mod. Phys. 80(1), 117–140 (2008).
[Crossref]

Wu, H. P.

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

Xia, C. L.

C. L. Xia and X. S. Liu, “Quantum path control and isolated attosecond pulse generation with the combination of two circularly polarized laser pulses,” Phys. Rev. A 87(4), 043406 (2013).
[Crossref]

C. L. Xia, X. L. Ge, X. Zhao, J. Guo, and X. S. Liu, “Isolated attosecond pulse generation from a model of Ar+ cluster in a synthesized two-color laser pulse,” Phys. Rev. A 85(2), 025802 (2012).
[Crossref]

Xu, Z. Z.

Z. N. Zeng, Y. Cheng, X. H. Song, R. X. Li, and Z. Z. Xu, “Generation of an extreme ultraviolet supercontinuum in a two-color laser field,” Phys. Rev. Lett. 98(20), 203901 (2007).
[Crossref] [PubMed]

Yakovlev, V. S.

E. Goulielmakis, M. Schultze, M. Hofstetter, V. S. Yakovlev, J. Gagnon, M. Uiberacker, A. L. Aquila, E. M. Gullikson, D. T. Attwood, R. Kienberger, F. Krausz, and U. Kleineberg, “Single-cycle nonlinear optics,” Science 320(5883), 1614–1617 (2008).
[Crossref] [PubMed]

Yang, B. R.

K. J. Schafer, B. R. Yang, L. F. DiMauro, and K. C. Kulander, “Above threshold ionization beyond the high harmonic cutoff,” Phys. Rev. Lett. 70(11), 1599–1602 (1993).
[Crossref] [PubMed]

Yang, Y. Y.

Yavuz, I.

I. Yavuz, E. A. Bleda, Z. Altun, and T. Topcu, “Generation of a broadband xuv continuum in high-order-harmonic generation by spatially inhomogeneous fields,” Phys. Rev. A 85(1), 013416 (2012).
[Crossref]

Yu, C.

C. Yu, H. X. He, Y. H. Wang, Q. Shi, Y. D. Zhang, and R. F. Lu, “Intense attosecond pulse generated from a molecular harmonic plateau of H2+ in mid-infrared laser fields,” J. Phys. At. Mol. Opt. Phys. 47(5), 055601 (2014).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
[Crossref]

Yu, H. J.

Yuan, K. J.

K. J. Yuan and A. D. Bandrauk, “Single circularly polarized attosecond pulse generation by intense few cycle elliptically polarized laser pulses and terahertz fields from molecular media,” Phys. Rev. Lett. 110(2), 023003 (2013).
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Zaïr, A.

J. A. Pérez-Hernández, M. F. Ciappina, M. Lewenstein, L. Roso, and A. Zaïr, “Beyond carbon K-edge harmonic emission using a spatial and temporal synthesized laser field,” Phys. Rev. Lett. 110(5), 053001 (2013).
[Crossref] [PubMed]

Zeng, Z. N.

Z. N. Zeng, Y. Cheng, X. H. Song, R. X. Li, and Z. Z. Xu, “Generation of an extreme ultraviolet supercontinuum in a two-color laser field,” Phys. Rev. Lett. 98(20), 203901 (2007).
[Crossref] [PubMed]

Zhang, C. P.

X. Y. Miao and C. P. Zhang, “Multichannel recombination in high-order-harmonic generation from asymmetric molecular ions,” Phys. Rev. A 89(3), 033410 (2014).
[Crossref]

Zhang, P. Y.

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Dissociation and ionization competing processes for H2+ in intense laser field: Which one is larger?” J. Chem. Phys. 136(2), 024311 (2012).
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H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Direct multi-photon ionizations of H2+ in intense laser fields,” J. Phys. At. Mol. Opt. Phys. 45(8), 085103 (2012).
[Crossref]

H. X. He, R. F. Lu, P. Y. Zhang, Y. H. Guo, K. L. Han, and G. Z. He, “Theoretical investigation of the origin of the multipeak structure of kinetic-energy-release spectra from charge-resonance-enhanced ionization of H2+ in intense laser fields,” Phys. Rev. A 84(3), 033418 (2011).
[Crossref]

R. F. Lu, P. Y. Zhang, and K. L. Han, “Attosecond-resolution quantum dynamics calculations for atoms and molecules in strong laser fields,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys. 77(6), 066701 (2008).
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Zhang, Q.

Z. Wang, P. Lan, J. Luo, L. He, Q. Zhang, and P. Lu, “Control of electron dynamics with a multicycle two-color spatially inhomogeneous field for efficient single-attosecond-pulse generation,” Phys. Rev. A 88(6), 063838 (2013).
[Crossref]

Zhang, Y. D.

C. Yu, H. X. He, Y. H. Wang, Q. Shi, Y. D. Zhang, and R. F. Lu, “Intense attosecond pulse generated from a molecular harmonic plateau of H2+ in mid-infrared laser fields,” J. Phys. At. Mol. Opt. Phys. 47(5), 055601 (2014).
[Crossref]

Zhao, X.

C. L. Xia, X. L. Ge, X. Zhao, J. Guo, and X. S. Liu, “Isolated attosecond pulse generation from a model of Ar+ cluster in a synthesized two-color laser pulse,” Phys. Rev. A 85(2), 025802 (2012).
[Crossref]

AIP Advances (1)

Y. H. Wang, H. P. Wu, Y. Chen, Z. L. Lu, C. Yu, Q. Shi, K. M. Deng, and R. F. Lu, “Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse,” AIP Advances 2(2), 022102 (2012).
[Crossref]

Commun. Comput. Chem. (1)

L. Q. Feng and T. S. Chu, “Role of excited states in asymmetric harmonic emission,” Commun. Comput. Chem. 1, 52–62 (2013).

J. Chem. Phys. (2)

L. Q. Feng and T. S. Chu, “Nuclear signatures on the molecular harmonic emission and the attosecond pulse generation,” J. Chem. Phys. 136(5), 054102 (2012).
[Crossref] [PubMed]

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Dissociation and ionization competing processes for H2+ in intense laser field: Which one is larger?” J. Chem. Phys. 136(2), 024311 (2012).
[Crossref] [PubMed]

J. Mod. Opt. (1)

Y. H. Wang, H. P. Wu, Y. Qian, Q. Shi, C. Yu, Y. Chen, K. M. Deng, and R. F. Lu, “Laser-parameter effects on the generation of ultrabroad harmonic and ultrashort attosecond pulse in a long-plus-short scheme,” J. Mod. Opt. 59(19), 1640–1649 (2012).
[Crossref]

J. Phys. At. Mol. Opt. Phys. (3)

H. X. He, R. F. Lu, P. Y. Zhang, K. L. Han, and G. Z. He, “Direct multi-photon ionizations of H2+ in intense laser fields,” J. Phys. At. Mol. Opt. Phys. 45(8), 085103 (2012).
[Crossref]

R. F. Lu, H. X. He, Y. H. Guo, and K. L. Han, “Theoretical study of single attosecond pulse generation with a three-colour laser field,” J. Phys. At. Mol. Opt. Phys. 42(22), 225601 (2009).
[Crossref]

C. Yu, H. X. He, Y. H. Wang, Q. Shi, Y. D. Zhang, and R. F. Lu, “Intense attosecond pulse generated from a molecular harmonic plateau of H2+ in mid-infrared laser fields,” J. Phys. At. Mol. Opt. Phys. 47(5), 055601 (2014).
[Crossref]

Nat Commun (1)

C. Jin, G. L. Wang, H. Wei, A. T. Le, and C. D. Lin, “Waveforms for optimal sub-keV high-order harmonics with synthesized two- or three-colour laser fields,” Nat Commun 5, 4003 (2014).
[Crossref] [PubMed]

Nat. Photonics (1)

I. Y. Park, S. Kim, J. Choi, D. H. Lee, Y. J. Kim, M. F. Kling, M. I. Stockman, and S. W. Kim, “Plasmonic generation of ultrashort extreme-ultraviolet light pulses,” Nat. Photonics 5(11), 677–681 (2011).
[Crossref]

Nat. Phys. (1)

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Extreme-ultraviolet light generation in plasmonic nanostructures,” Nat. Phys. 9(5), 304–309 (2013).
[Crossref]

Nature (5)

M. Krüger, M. Schenk, and P. Hommelhoff, “Attosecond control of electrons emitted from a nanoscale metal tip,” Nature 475(7354), 78–81 (2011).
[Crossref] [PubMed]

G. Herink, D. R. Solli, M. Gulde, and C. Ropers, “Field-driven photoemission from nanostructures quenches the quiver motion,” Nature 483(7388), 190–193 (2012).
[Crossref] [PubMed]

M. Hentschel, R. Kienberger, C. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, “Attosecond metrology,” Nature 414(6863), 509–513 (2001).
[Crossref] [PubMed]

S. Kim, J. H. Jin, Y. J. Kim, I. Y. Park, Y. Kim, and S. W. Kim, “High-harmonic generation by resonant plasmon field enhancement,” Nature 453(7196), 757–760 (2008).
[Crossref] [PubMed]

M. Sivis, M. Duwe, B. Abel, and C. Ropers, “Nanostructure-enhanced atomic line emission,” Nature 485(7397), E1–E2, discussion E2–E3 (2012).
[Crossref] [PubMed]

Opt. Express (5)

Opt. Lett. (1)

Phys. Rev. (2)

X. M. Tong and Sh. I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. 61(2), 021802 (2000).
[Crossref]

X. Chu and Sh. I. Chu, “Optimization of high-order harmonic generation by genetic algorithm and wavelet time-frequency analysis of quantum dipole emission,” Phys. Rev. 64(2), 021403 (2001).
[Crossref]

Phys. Rev. A (13)

A. D. Bandrauk and H. Z. Lu, “Enhanced ionization of the molecular ion H2+ in intense laser and static magnetic fields,” Phys. Rev. A 62(5), 053406 (2000).
[Crossref]

M. Vafaee, H. Sabzyan, Z. Vafaee, and A. Katanforoush, “Detailed instantaneous ionization rate of H2+ in an intense laser field,” Phys. Rev. A 74(4), 043416 (2006).
[Crossref]

L. Q. Feng and T. S. Chu, “Generation of an isolated sub-40-as pulse using two-color laser pulses: Combined chirp effects,” Phys. Rev. A 84(5), 053853 (2011).
[Crossref]

X. Y. Miao and H. N. Du, “Theoretical study of high-order-harmonic generation from asymmetric diatomic molecules,” Phys. Rev. A 87(5), 053403 (2013).
[Crossref]

X. Y. Miao and C. P. Zhang, “Multichannel recombination in high-order-harmonic generation from asymmetric molecular ions,” Phys. Rev. A 89(3), 033410 (2014).
[Crossref]

H. X. He, R. F. Lu, P. Y. Zhang, Y. H. Guo, K. L. Han, and G. Z. He, “Theoretical investigation of the origin of the multipeak structure of kinetic-energy-release spectra from charge-resonance-enhanced ionization of H2+ in intense laser fields,” Phys. Rev. A 84(3), 033418 (2011).
[Crossref]

C. L. Xia, X. L. Ge, X. Zhao, J. Guo, and X. S. Liu, “Isolated attosecond pulse generation from a model of Ar+ cluster in a synthesized two-color laser pulse,” Phys. Rev. A 85(2), 025802 (2012).
[Crossref]

C. L. Xia and X. S. Liu, “Quantum path control and isolated attosecond pulse generation with the combination of two circularly polarized laser pulses,” Phys. Rev. A 87(4), 043406 (2013).
[Crossref]

P. C. Li, C. Laughlin, and S. I. Chu, “Generation of isolated sub-20-attosecond pulses from He atoms by two-color midinfrared laser fields,” Phys. Rev. A 89(2), 023431 (2014).
[Crossref]

I. Yavuz, E. A. Bleda, Z. Altun, and T. Topcu, “Generation of a broadband xuv continuum in high-order-harmonic generation by spatially inhomogeneous fields,” Phys. Rev. A 85(1), 013416 (2012).
[Crossref]

A. Husakou, S. J. Im, and J. Herrmann, “Theory of plasmon-enhanced high-order harmonic generation in the vicinity of metal nanostructures in noble gases,” Phys. Rev. A 83(4), 043839 (2011).
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Figures (5)

Fig. 1
Fig. 1 (a) The temporal shape of the two-color laser field with controlling phase φ2 = 0 (red line) and φ2 = 1.56π (blue line). (b) Coupling field in time and space for the φ2 = 1.56π.
Fig. 2
Fig. 2 HHG spectra generated by single-color homogeneous laser field (red line), two-color homogeneous laser field with φ2 = 0 (green line) and two-color inhomogeneous laser field with φ2 = 0 (orange line) and φ2 = 1.56π(blue line).
Fig. 3
Fig. 3 The time-frequency analysis of HHG in Fig. 2 for the two-color inhomogeneous laser field with φ2 = 1.56π. The color bar is on logarithmic scale and in arbitrary unit.
Fig. 4
Fig. 4 (a) The time-dependent classical ionization and recollision energy analysis. P1, P2 and P3 indicate the three dominant peaks of the recollision. (b) The time-dependent ionization rate and recombination rate in the spatially inhomogeneous two-color laser field. The laser parameters are identical to those in Fig. 3.
Fig. 5
Fig. 5 (a) Attosecond pulse generation by superposing the harmonics from 1200th to 1500th order. Inset is attosecond pulse emission in the whole time range. (b) Attosecond pulse generation by using Gaussian band-pass function. The filter window (the FWHM of a Gaussian function) is set from 1200th to 1500th order which is identical to the frequency range in (a). The laser parameters used are the same as those in Fig. 3.

Equations (8)

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i φ(ρ,z;t) t =[ T ρ + T z + V C (ρ,z)+ V L (z,t) ]φ(ρ,z;t),
P(ω)= | 1 2π 0 T a(t) e iωt dt | 2 ,
A(t,ω)= a( t ) ω W(ω( t t))d t ,
I( t )= | q ( 0 t a(t') e iωt' dt' ) e iqωt | 2 ,
E(t)= E 1 f 1 (t T 0 )cos( ω 1 (t T 0 )+ ϕ 1 )+ E 2 f 2 (t T 0 )cos( ω 2 (t T 0 )+ ϕ 2 ).
z ¨ (t)= z V L (z,t),
z ¨ (t)=(1+2β| z |)E(t).
P(t)= 0 ρ z z Im[ φ * δ(z z 0 ) z φ] dzρdρ,

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