[1] Carbajo S, Howlett I D, Brizuela F, Buchanan K S, Marconi M C. Opt. Lett., 37, 2994(2012).

[2] Nejdl J, Howlett I D, Carlton D, Anderson E H, Chao W, Marconi M C, Rocca J J, Menoni C S 2015 IEEE Photon. J. 7 1.

[3] Rocca J J, Shlyaptsev V, Tomasel F G, Cortazar O D, Hartshorn D, Chilla J L. Phys. Rev. Lett., 73, 2192(1994).

[4] Zhao Y P, Jiang S, Xie Y, Yang D W, Teng S P, Chen D Y, Wang Q. Opt. Lett., 36, 3458(2011).

[5] Frati M, Seminario M, Rocca J J. Opt. Lett., 25, 1022(2000).

[6] Tomasel F G, Rocca J J, Shlyaptsev V N, Macchietto C D. Phys. Rev. A, 55, 1437(1997).

[7] Elton R C, Datla R U, Roberts J R, Bhatia A K. Phys. Rev. A, 40, 4142(1989).

[8] Bernstein E R, Dong F, Guo Y Q, Shin J W, Heinbuch S, Rocca J J 2016 X-Ray Laser (Switzerland: Springer) p359.

[9] Menoni C S, Nejdl J, Monserud N, Howleet I D, Carlton D, Anderson E H, Chao W, Marconi M C, Rocca J J 2016 X-Ray Laser 2014 (Switzerland: Springer) p259.

[10] Suckewer S, Skinner C H, Milchberg H, Keane C, Voorhee D. Phys. Rev. Lett., 55, 1753(1985).

[11] Ceglio N M, Gaines D P, Trebes J E, London R A, Stearns D G. Appl. Opt., 27, 5022(1988).

[12] Murai K, Yuan G, Kodama R, Daido H, Kato Y, Niibe M, Miyake A, Tsukamoto M, Fukuda Y, Neely D, Macphee A G. Jpn. J. Appl. Phys., 33, L600(1994).

[13] Carillon A, Chen H Z, Dhez P, Dwivedi L, Jacoby J, Jaegle P, Jamelot G, Zhang J, Key M H, Kidd A, Klisnick A, Kodama R, Krishnan J, Lewis C, Neely D, Norreys P, O’Neill D, Pert G J, Ramsden S, Raucourt J P, Tallents G, Uhomoibhi J O. Phys. Rev. Lett., 68, 2917(1992).

[14] He S T, Chunyu S T, Zhang Q R, He A, Shen H Z, Ni Y L, Yu S Y. Phys. Rev. A, 46, 1610(1992).

[15] 安红海, An H H, 王琛, Wang C, 方智恒, Fang Z H, 熊俊, Xiong J, 孙今人, Sun J R, 王伟, Wang W, 傅思祖, Fu S Z, 乔秀梅, Qiao X M, 郑无敌, Zheng W D, 张国平, Zhang G P[J]. Acta Phys. Sin., 60, 104207(2011).

[16] Ceglio N M, Gaines D P, Stearns D G, Hawryluk A M. Opt. Commun., 69, 285(1989).

[17] Rus B, Mocek T, Präg A R, Kozlová M, Jamelot G, Carillon A, Ros D, Joyeux D, Phalippou D. Phys. Rev. A, 66, 063806(2002).

[18] Rocca J J, Clark D P, Chilla J L A, Shlyaptsev V N. Phys. Rev. Lett., 77, 1476(1996).

[19] Zhao Y P, Liu T, Zhang W H, Li W, Cui H Y. Opt. Lett., 41, 3779(2016).

[20] Rus B, Carillon A, Dhez P, Jaegle´ P, Jamelot G, Klisnick A, Nantel M, Zeitoun P. Phys. Rev. A, 55, 3858(1997).

[21] Zhao Y P, Liu T, Jiang S, Cui H Y, Ding Y J, Li L 2016 Appl. Phys. B 122 107.