[1] P.Agostini, C. I.Blaga, F.Catoire, R.Chirla, P.Colosimo, L. F.DiMauro, G.Doumy, C.Hauri, A. M.March, H. G.Muller, G. G.Paulus, J.Tate, J.Wheeler. Scaling strong-field interactions towards the classical limit. Nat. Phys., 4, 386(2008).
[2] M.Baudisch, J.Biegert, M.Hemmer, R.Moshammer, M. G.Pullen, C. D.Schr?ter, M.Sclafani, A.Senftleben, J.Ullrich, B.Wolter. Strong-field physics with mid-IR fields. Phys. Rev. X, 5, 021034(2015).
[3] S.Ali?auskas, G.Andriukaitis, P.Arpin, T.Bal?iunas, A.Baltu?ka, A.Becker, S.Brown, M.-C.Chen, A.Gaeta, C.Hernández-García, A.Jaron-Becker, H. C.Kapteyn, O. D.Mücke, M. M.Murnane, L.Plaja, D.Popmintchev, T.Popmintchev, A.Pugzlys, S. E.Schrauth, B.Shim. Bright coherent ultrahigh harmonics in the keV x-ray regime from mid-infrared femtosecond lasers. Science, 336, 1287(2012).
[4] D. R.Austin, M.Baudisch, J.Biegert, A.Couairon, D.Faccio, M.Hemmer, F.Silva, A.Thai. Multi-octave supercontinuum generation from mid-infrared filamentation in a bulk crystal. Nat. Commun., 3, 807(2012).
[5] P.Agostini, C. I.Blaga, A. D.DiChiara, L. F.DiMauro, C. D.Lin, T. A.Miller, E.Sistrunk, J.Xu, K.Zhang. Imaging ultrafast molecular dynamics with laser-induced electron diffraction. Nature, 483, 194(2012).
[6] T.Amotchkina, A.Apolonski, A.Azzeer, E.Fill, F.Fleischmann, K.Fritsch, C.Hofer, M.Huber, S. A.Hussain, N.Karpowicz, K. V.Kepesidis, F.Krausz, V.Pervak, M.Poetzlberger, O.Pronin, I.Pupeza, W.Schweinberger, M.Trubetskov, L.Vamos, M.?igman. Field-resolved infrared spectroscopy of biological systems. Nature, 577, 52(2020).
[7] N.Abdel-Moneim, O.Bang, T.Benson, S.Dupont, D.Furniss, I.Kubat, U.M?ller, C. R.Petersen, J.Ramsay, A.Seddon, S.Sujecki, Z.Tang, B.Zhou. Mid-infrared supercontinuum covering the 1.4–13.3 μm molecular fingerprint region using ultra-high NA chalcogenide step-index fibre. Nat. Photonics, 8, 830(2014).
[8] T. W.H?nsch, N.Picqué, A.Schliesser. Mid-infrared frequency combs. Nat. Photonics, 6, 440(2012).
[9] S.Ali?auskas, A.Baltu?ka, T.Elsaesser, M.Holtz, V.Juvé, S.Ku, A.Pug?lys, J.Weisshaupt, M.Woerner. High-brightness table-top hard X-ray source driven by sub-100-femtosecond mid-infrared pulses. Nat. Photonics, 8, 927(2014).
[10] J. M.Dawson, T.Tajima. Laser electron accelerator. Phys. Rev. Lett., 43, 267(1979).
[11] M.Babzien, I.Ben-Zvi, Y.-H.Chen, N.Cook, N. P.Dover, W.Lu, Z.Najmudin, I. V.Pogorelsky, M. N.Polyanskiy, J.Skaritka, A.Ting, O.Tresca. Extending laser plasma accelerators into the mid-IR spectral domain with a next-generation ultra-fast CO2 laser. Plasma Phys. Controlled Fusion, 58, 034003(2016).
[12] R.Assmann, M.Chen, F.He, W.-Y.Liu, Z.-M.Sheng, S.-M.Weng, J.Zhang, X.-L.Zhu. Generation of 100-MeV attosecond electron bunches with terawatt few-cycle laser pulses. Phys. Rev. Appl., 15, 044039(2021).
[13] S.Ali?auskas, A.Baltu?ka, S.H?fer, D.Kartashov, V.Kaymak, S.Kroker, A.Pug?lys, A.Pukhov, O.Rosmej, Z.Samsonova, V.Shumakova, T.Siefke, C.Spielmann, I.Uschmann. Relativistic interaction of long-wavelength ultrashort laser pulses with nanowires. Phys. Rev. X, 9, 021029(2019).
[14] A.Apolonski, J.Biegert, E.Fill, N.Karpowicz, F.Krausz, N.Lilienfein, T.Paasch-Colberg, V.Pervak, M.Pescher, O.Pronin, I.Pupeza, D.Sánchez, W.Schweinberger, M.Seidel, Z.Wei, J.Zhang, I.Znakovskaya. High-power sub-two-cycle mid-infrared pulses at 100 MHz repetition rate. Nat. Photonics, 9, 721(2015).
[15] S.Ali?auskas, A.Baltu?ka, D.Faccio, D.Kartashov, P.Malevich, A.Pug?lys, V.Shumakova, A.Voronin, A. M.Zheltikov. Multi-millijoule few-cycle mid-infrared pulses through nonlinear self-compression in bulk. Nat. Commun., 7, 12877(2016).
[16] L. F.DiMauro, K.-H.Hong, F. X.K?rtner, P.Krogen, T.Kroh, H.Liang, J.Moses, H.Park, P.Schunemann, Z.Wang, K.Zawilski. High-energy mid-infrared sub-cycle pulse synthesis from a parametric amplifier. Nat. Commun., 8, 141(2017).
[17] N.Flemens, K.-H.Hong, F. X.K?rtner, P.Krogen, H.Liang, J.Moses, H.Suchowski. Generation and multi-octave shaping of mid-infrared intense single-cycle pulses. Nat. Photonics, 11, 222(2017).
[18] P.Audebert, M.Bougeard, T.Ceccotti, P.d’Oliveira, J.-P.Geindre, A.Levy, R.Marjoribanks, P.Martin, P.Monot, F.Quéré, F.Réau, C.Thaury. Plasma mirrors for ultrahigh-intensity optics. Nat. Phys., 3, 424(2007).
[19] M.Chen, D. A.Jaroszynski, W. B.Mori, L.-J.Qian, Z.-M.Sheng, S.-M.Weng, L.-L.Yu, J.Zhang, Y.Zhao. Plasma optical modulators for intense lasers. Nat. Commun., 7, 11893(2016).
[20] L.Chopineau, A.Denoeud, A.Leblanc, P.Martin, G.Mennerat, F.Quéré. Plasma holograms for ultrahigh-intensity optics. Nat. Phys., 13, 440(2017).
[21] M.Chen, S.Luan, W. B.Mori, M.Murakami, Z.Sheng, S.Weng, L.Yu, W.Yu, J.Zhang, Q.Zhao. Extreme case of Faraday effect: Magnetic splitting of ultrashort laser pulses in plasmas. Optica, 4, 1086(2017).
[22] A.Martinez de la Ossa, J.Osterhoff, K.Poder, M.Zeng. Plasma eyepieces for petawatt class lasers. Phys. Plasmas, 27, 023109(2020).
[23] L.Chopineau, A.Denoeud, A.Leblanc, P.Martin, E.Porat, F.Quéré, H.Vincenti. Spatio-temporal characterization of attosecond pulses from plasma mirrors. Nat. Phys., 17, 968(2021).
[24] T.Katsouleas, W. B.Mori, C.Ren, L. O.Silva, F. S.Tsung. Generation of ultra-intense single-cycle laser pulses by using photon deceleration. Proc. Natl. Acad. Sci. U. S. A., 99, 29(2002).
[25] Z.Cheng, H.-H.Chu, Y.He, J.Hua, C.Joshi, F.Li, S.Liu, W.Lu, Y.Ma, W. B.Mori, Z.Nie, X.Ning, C.-H.Pai, Q.Su, Y.Wan, J.Wang, Y.Wu, C.Zhang, J.Zhang. Relativistic single-cycle tunable infrared pulses generated from a tailored plasma density structure. Nat. Photonics, 12, 489(2018).
[26] M.Chen, P.McKenna, Z.-M.Sheng, S.-M.Weng, J.Zhang, X.-L.Zhu. Single-cycle terawatt twisted-light pulses at midinfrared wavelengths above 10 µm. Phys. Rev. Appl., 12, 054024(2019).
[27] M.Chen, Z.-M.Sheng, S.-M.Weng, J.Zhang, X.-L.Zhu. Efficient generation of relativistic near-single-cycle mid-infrared pulses in plasmas. Light: Sci. Appl., 9, 46(2020).
[28] J. M.Dawson, M. E.Jones, T.Katsouleas, W. B.Mori, S. C.Wilks. Photon accelerator. Phys. Rev. Lett., 62, 2600(1989).
[29] E.Esarey, P.Sprangle, A.Ting. Nonlinear theory of intense laser-plasma interactions. Phys. Rev. Lett., 64, 2011(1990).
[30] J.-X.Ma, Z.-M.Sheng, Z.-Z.Xu, W.Yu. Effect of an electron plasma wave on the propagation of an ultrashort laser pulse. J. Opt. Soc. Am. B, 10, 122(1993).
[31] T. D.Arber, A. R.Bell, K.Bennett, C. S.Brady, R. G.Evans, P.Gillies, A.Lawrence-Douglas, M. G.Ramsay, C. P.Ridgers, H.Schmitz, N. J.Sircombe. Contemporary particle-in-cell approach to laser-plasma modelling. Plasma Phys. Controlled Fusion, 57, 113001(2015).
[32] A.Buck, M.Geissler, M.Heigoldt, S.Karsch, K.Khrennikov, F.Krausz, J. M.Mikhailova, K.Schmid, B.Shen, L.Veisz, J.Wenz, J.Xu. Shock-front injector for high-quality laser-plasma acceleration. Phys. Rev. Lett., 110, 185006(2013).
[33] S. W.Chou, A.D?pp, J.-P.Goddet, G.Grittani, E.Guillaume, A.Lifschitz, V.Malka, K.Ta Phuoc, A.Tafzi, C.Thaury, L.Veisz. Electron rephasing in a laser-wakefield accelerator. Phys. Rev. Lett., 115, 155002(2015).
[34] M.Fang, Y. X.Leng, R. X.Li, W. T.Li, J. Q.Liu, J. S.Liu, R.Qi, Z. Y.Qin, C.Wang, W. T.Wang, F. X.Wu, Y.Xu, Z. Z.Xu, C. H.Yu, Z. J.Zhang. High-brightness high-energy electron beams from a laser wakefield accelerator via energy chirp control. Phys. Rev. Lett., 117, 124801(2016).
[35] A. L.Cavalieri, X.Gu, W.Helml, B.Horvath, R.Kienberger, G. G.Paulus, M. G.Sch?tzel, T.Wittmann. Single-shot carrier–envelope phase measurement of few-cycle laser pulses. Nat. Phys., 5, 357(2009).
[36] N.Ishii, J.Itatani, T.Kanai, K.Kaneshima, K.Kitano, S.Watanabe. Carrier-envelope phase-dependent high harmonic generation in the water window using few-cycle infrared pulses. Nat. Commun., 5, 3331(2014).