[1] T POPMINTCHEV, D ARPIN, S BROWN et al. Bright coherent ultrahigh harmonic in the keV X-ray regime from mid-infrared femtosecond lasers. Science, 336, 1287-1291(2012).

[2] J L KRAUSE, K J SCHAFER, K C KULANDER. High-order harmonic generation from atoms and ions in the high intensity regime. Physical Review Letters, 68, 3535-3538(1992).

[3] A RAVASIO, D GAUTHIER, F R N C MAIA et al. Single-shot diffractive imaging with a table-top femtosecond soft x-ray laser-harmonics source. Physical Review Letters, 103(2009).

[4] A D SHINER, B E SCHMIDT, C TRALLERO-HERRER et al. Probing collective multi-electron dynamics in xenon with high-harmonic spectroscopy. Nature Physics, 7, 464-467(2011).

[5] R CIREASA, A E BOGUSLAYSKIY, B PONS et al. Probing molecular chirality on a sub-femtosecond timescale. Nature Physics, 11, 654-658(2015).

[6] O NEUFEID, O COHEN. Optical chirality in nonlinear optics： application to high harmonic generation. Physical Review Letters, 120, 133206(2018).

[7] A FERRE, C HANDSCHIN, M DUMERGUE et al. A table-top ultrashort light source in the extreme ultraviolet for circular dichroism experiments. Nature Photonics, 9, 93-98(2014).

[8] T FAN, P GRYCHTOL, R KNUT et al. Bright circularly polarized soft X-ray high harmonics for X-ray magnetic circular dichroism. Proceedings of the National Academy of Sciences of the United States of America, 112, 14206(2015).

[9] Xiaowei WANG, Li WANG, Fan XIAO et al. Generation of 88 as isolated attosecond pulses with double optical gating. Chinese Physical Letters, 37(2020).

[10] Chenhui XU, Yanbo CHEN, Liwei HE等. Optimization of two-color chirped laser waveform for extending high-order harmonic cut-off energy and generating isolated attosecond pulse（Invited）. Acta Photonica Sinica, 49, 1149007(2020).

[11] O KFIR, P GRYCHTOL, E TURGUT et al. Generation of bright phase-matched circularly polarized extreme ultraviolet high harmonics. Nature Photonics, 9, 99-105(2015).

[12] H EICHMANN, A EGBERT, S NOLTE et al. Polarization-dependent high-order two-color mixing. Physical Review A, 51, R3414-R3417(1995).

[13] S LONG, W BECKER, J K MCIVER. Model calculations of polarization-dependent two-color high-harmonic generation. Physical Review A, 52, 2262-2278(1995).

[14] T ZUO, A D BANDRAUK. High-order harmonic generation in intense laser and magnetic fields. Journal of Nonlinear Optical Physics & Materials, 4, 533-546(1995).

[15] A FLEISCHER, O KFIR, T DISKIN et al. Spin angular momentum and tunable polarization in high-harmonic generation. Nature Photonics, 8, 543-549(2014).

[16] D B MILOSEVIC. Atomic and molecular processes in a strong bicircular laser field. Atoms, 6, 61(2018).

[17] J VENZKE, Y GEBRE, A BECKER et al. Pathways to excitation of atoms with bicircular laser pulses. Physical Review A, 101(2020).

[18] A FLEISCHER, P SIDORENKO, O COHEN. High-order harmonics of bichromatic counter-rotating elliptically polarized drivers： fully controlled polarization state and novel selection rules(2013).

[19] D B MILOSEVIC, W BECKER. High-order harmonic generation by bi-elliptical orthogonally polarized two-color fields. Physical Review A, 102(2020).

[20] A FLEISCHER, P SIDORENKO, O COHEN. Generation of high-order harmonics with controllable elliptical polarization. Optics Letters, 38, 223-225(2013).

[21] Mufeng ZHU, Gouli WANG, Songfeng ZHAO et al. Generating attosecond pulses with high ellipticity by use of He atoms. Journal of Modern Optics, 66, 1467-1475(2019).

[22] Xuebin BIAN. Photoionization of atoms and molecules studied by the Crank-Nicolson method. Physical Review A, 90(2014).