[1] [1] Smallwood CL, Kaindl RA, Lanzara A. Ultrafast angle-resolved photoemission spectroscopy of quantum materials. EPL. 2016;115:27001.

[2] [2] Sobota JA, He Y, Shen Z-X. Angle-resolved photoemission studies of quantum materials. Rev Mod Phys. 2021;93: Article 025006.

[3] [3] Boschini F, Zonno M, Damascelli A. Time- and angle-resolved photoemission studies of quantum materials. Rev Mod Phys. 2024;96:Article 015003.

[4] [4] Zhang H, Pincelli T, Jozwiak C, Kondo T, Ernstorfer R, Sato T, Zhou S. Angle-resolved photoemission spectroscopy. Nat Rev Methods Primers. 2022;2:54.

[5] [5] Na M, Mills AK, Jones DJ. Advancing time-and angle-resolved photoemission spectroscopy: The role of ultrafast laser development. Phys Rep. 2023;1036:1–47.

[6] [6] Wang YH, Steinberg H, Jarillo-Herrero P, Gedik N. Observation of Floquet-Bloch states on the surface of a topological insulator. Science. 2013;342(6157):453–457.

[7] [7] Zhou S, Bao C, Fan B, Zhou H, Gao Q, Zhong H, Lin T, Liu H, Yu P, Tang P, et al. Pseudospin-selective Floquet band engineering in black phosphorus. Nature. 2023;614:75–80.

[8] [8] Zhou S, Bao C, Fan B, Wang F, Zhong H, Zhang H, Tang P, Duan W, Zhou S. Floquet engineering of black phosphorus upon below-gap pumping. Phys Rev Lett. 2023;131(11): Article 116401.

[9] [9] Bao C, Tang P, Sun D, Zhou S. Light-induced emergent phenomena in 2D materials and topological materials. Nat Rev Phys. 2022;4:33–48.10.1038/s42254-021-00388-1

[10] [10] Orenstein J, Moore JE, Morimoto T, Torchinsky DH, Harter JW, Hsieh D. Topology and symmetry of quantum materials via nonlinear optical responses. Annu Rev Condens Matter Phys. 2021;12:247–272.10.1146/annurev-conmatphys-031218-013712

[11] [11] Zong A, Kogar A, Gedik N. Unconventional light-induced states visualized by ultrafast electron diffraction and microscopy. MRS Bull. 2021;46:720–730.10.1557/s43577-021-00163-8

[12] [12] Disa AS, Nova TF, Cavalleri A. Engineering crystal structures with light. Nat Phys. 2021;17:1087–1092.10.1038/s41567-021-01366-1

[13] [13] de la Torre A, Kennes DM, Claassen M, Gerber S, McIver JW, Sentef MA. Colloquium: Nonthermal pathways to ultrafast control in quantum materials. Rev Mod Phys. 2021;93: Article 041002.

[14] [14] Faure J, Mauchain J, Papalazarou E, Yan W, Pinon J, Marsi M, Perfetti L. Full characterization and optimization of a femtosecond ultraviolet laser source for time and angle-resolved photoemission on solid surfaces. Rev Sci Instrum. 2012;83(4): Article 043109.

[15] [15] Smallwood CL, Jozwiak C, Zhang W, Lanzara A. An ultrafast angle-resolved photoemission apparatus for measuring complex materials. Rev Sci Instrum. 2012;83(12): Article 123904.

[16] [16] Gauthier A, Sobota JA, Gauthier N, Xu KJ, Pfau H, Rotundu CR, Shen ZX, Kirchmann PS. Tuning time and energy resolution in time-resolved photoemission spectroscopy with nonlinear crystals. J Appl Phys. 2020;128(9): Article 093101.

[17] [17] Bao C, Luo L, Zhang H, Zhou S, Ren Z, Zhou S. Full diagnostics and optimization of time resolution for time-and angle-resolved photoemission spectroscopy. Rev Sci Instrum. 2021;92(3): Article 033904.

[18] [18] Kiss T, Shimojima T, Ishizaka K, Chainani A, Togashi T, Kanai T, Wang XY, Chen CT, Watanabe S, Shin S. A versatile system for ultrahigh resolution, low temperature, and polarization dependent laser-angle-resolved photoemission spectroscopy. Rev Sci Instrum. 2008;79: Article 023106.

[19] [19] Liu G, Wang G, Zhu Y, Zhang H, Zhang G, Wang X, Zhou Y, Zhang W, Liu H, Zhao L, et al. Development of a vacuum ultraviolet laser-based angle-resolved photoemission system with a superhigh energy resolution better than 1 meV. Rev Sci Instrum. 2008;79: Article 023105.

[20] [20] Jiang R, Mou D, Wu Y, Huang L, McMillen CD, Kolis J, Giesber HG III, Egan JJ, Kaminski A. Tunable vacuum ultraviolet laser based spectrometer for angle resolved photoemission spectroscopy. Rev Sci Instrum. 2014;85(3): Article 033902.

[21] [21] Bao C, Zhong H, Zhou S, Feng R, Wang Y, Zhou S. Ultrafast time- and angle-resolved photoemission spectroscopy with widely tunable probe photon energy of 5.3–7.0 eV for investigating dynamics of three-dimensional materials. Rev Sci Instrum. 2022;93(1): Article 013902.

[22] [22] Zhong H, Bao C, Lin T, Zhou S, Zhou S. A newly designed femtosecond KBe2BO3F2 device with pulse duration down to 55 fs for time- and angle-resolved photoemission spectroscopy. Rev Sci Instrum. 2022;93(11): Article 113910.

[23] [23] Mathias S, Miaja-Avila L, Murnane MM, Kapteyn H, Aeschlimann M, Bauer M. Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer. Rev Sci Instrum. 2007;78(8): Article 083105.

[24] [24] Frietsch B, Carley R, Döbrich K, Gahl C, Teichmann M, Schwarzkopf O, Wernet P, Weinelt M. A high-order harmonic generation apparatus for time- and angle-resolved photoelectron spectroscopy. Rev Sci Instrum. 2013;84(7): Article 075106.

[25] [25] Eich S, Stange A, Carr AV, Urbancic J, Popmintchev T, Wiesenmayer M, Jansen K, Ruffing A, Jakobs S, Rohwer T, et al. Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers. J Electron Spectros and Relat Phenomena. 2014;195:231–236.10.1016/j.elspec.2014.04.013

[26] [26] Sie EJ, Rohwer T, Lee C, Gedik N. Time-resolved XUV ARPES with tunable 24–33 eV laser pulses at 30 meV resolution. Nat Commun. 2019;10(1):3535.

[27] [27] Puppin M, Deng Y, Nicholson CW, Feldl J, Schröter NBM, Vita H, Kirchmann PS, Monney C, Rettig L, Wolf M, et al. Time- and angle-resolved photoemission spectroscopy of solids in the extreme ultraviolet at 500 kHz repetition rate. Rev Sci Instrum. 2019;90(2): Article 023104.

[28] [28] Buss JH, Wang H, Xu Y, Maklar J, Joucken F, Zeng L, Stoll S, Jozwiak C, Pepper J, Chuang YD, et al. A setup for extreme-ultraviolet ultrafast angle-resolved photoelectron spectroscopy at 50-kHz repetition rate. Rev Sci Instrum. 2019;90(2): Article 023105.

[29] [29] Mills AK, Zhdanovich S, Na MX, Boschini F, Razzoli E, Michiardi M, Sheyerman A, Schneider M, Hammond TJ, Süss V, et al. Cavity-enhanced high harmonic generation for extreme ultraviolet time- and angle-resolved photoemission spectroscopy. Rev Sci Instrum. 2019;90(8): Article 083001.

[30] [30] Keunecke M, Möller C, Schmitt D, Nolte H, Jansen GSM, Reutzel M, Gutberlet M, Halasi G, Steil D, Steil S, et al. Time-resolved momentum microscopy with a 1 MHz high-harmonic extreme ultraviolet beamline. Rev Sci Instrum. 2020;91(6): Article 063905.

[31] [31] Liu Y, Beetar JE, Hosen MM, Dhakal G, Sims C, Kabir F, Etienne MB, Dimitri K, Regmi S, Liu Y, et al. Extreme ultraviolet time- and angle-resolved photoemission setup with 21.5 meV resolution using high-order harmonic generation from a turn-key Yb:KGW amplifier. Rev Sci Instrum. 2020;91(1): Article 013102.

[32] [32] Chen F, Wang J, Pan M, Liu J, Huang J, Zhao K, Yun C, Qian T, Wei Z, Ding H. Time-resolved ARPES with tunable 12–21.6 eV XUV at 400 kHz repetition rate. Rev Sci Instrum. 2023;94(4): Article 043905.

[33] [33] Rohwer T, Hellmann S, Wiesenmayer M, Sohrt C, Stange A, Slomski B, Carr A, Liu Y, Avila LM, Kalläne M, et al. Collapse of long-range charge order tracked by time-resolved photoemission at high momenta. Nature. 2011;471(7339):490–493.10.1038/nature09829

[34] [34] Hellmann S, Rohwer T, Kalläne M, Hanff K, Sohrt C, Stange A, Carr A, Murnane MM, Kapteyn HC, Kipp L, et al. Time-domain classification of charge-density-wave insulators. Nat Commun. 2012;3:1069.10.1038/ncomms2078

[35] [35] Dong S, Puppin M, Pincelli T, Beaulieu S, Christiansen D, Hübener H, Nicholson CW, Xian RP, Dendzik M, Deng Y, et al. Direct measurement of key exciton properties: Energy, dynamics, and spatial distribution of the wave function. Nat Sci. 2021;1(1): Article e10010.

[36] [36] Gierz I, Petersen JC, Mitrano M, Cacho C, Turcu ICE, Springate E, Stöhr A, Köhler A, Starke U, Cavalleri A. Snapshots of non-equilibrium Dirac carrier distributions in graphene. Nat Mater. 2013;12:1119–1124.10.1038/nmat3757

[37] [37] Damascelli A, Hussain Z, Shen Z-X. Angle-resolved photoemission studies of the cuprate superconductors. Rev Mod Phys. 2003;75:473–541.10.1103/RevModPhys.75.473

[38] [38] Beaulieu S, Schusser J, Dong S, Schüler M, Pincelli T, Dendzik M, Maklar J, Neef A, Ebert H, Hricovini K, et al. Revealing hidden orbital pseudospin texture with time-reversal dichroism in photoelectron angular distributions. Phys Rev Lett. 2020;125: Article 216404.

[39] [39] Schüler M, Pincelli T, Dong S, Devereaux TP, Wolf M, Rettig L, Ernstorfer R, Beaulieu S. Polarization-modulated angle-resolved photoemission spectroscopy: Toward circular dichroism without circular photons and Bloch wave-function reconstruction. Phys Rev X. 2022;12: Article 011019.

[40] [40] Rundquist A, Durfee CG III, Chang Z, Herne C, Backus S, Murnane MM, Kapteyn HC. Phase-matched generation of coherent soft X-rays. Science. 1998;280(5368):1412–1415.

[41] [41] Durfee CG, Rundquist AR, Backus S, Herne C, Murnane MM, Kapteyn HC. Phase matching of high-order harmonics in hollow waveguides. Phys Rev Lett. 1999;83:2187–2190.10.1103/PhysRevLett.83.2187

[42] [42] Heber M, Wind N, Kutnyakhov D, Pressacco F, Arion T, Roth F, Eberhardt W, Rossnagel K. Multispectral time-resolved energy–momentum microscopy using high- harmonic extreme ultraviolet radiation. Rev Sci Instrum. 2022;93: Article 083905.

[43] [43] Heyl CM, Coudert-Alteirac H, Miranda M, Louisy M, Kovacs K, Tosa V, Balogh E, Varjú K, L’Huillier A, Couairon A, et al. Scale-invariant nonlinear optics in gases. Optica. 2016;3(1):75–81.

[44] [44] Jung SW, Ryu SH, Shin WJ, Sohn Y, Huh M, Koch RJ, Jozwiak C, Rotenberg E, Bostwick A, Kim KS. Black phosphorus as a bipolar pseudospin semiconductor. Nat Mater. 2020;19:277–281.10.1038/s41563-019-0590-2

[45] [45] Bao C, Zhang H, Zhang T, Wu X, Luo L, Zhou S, Li Q, Hou Y, Yao W, Liu L, et al. Experimental evidence of chiral symmetry breaking in Kekulé-ordered graphene. Phys Rev Lett. 2021;126: Article 206804.

[46] [46] Tao Z, Chen C, Szilvási T, Keller M, Mavrikakis M, Kapteyn H, Murnane M. Direct time-domain observation of attosecond final-state lifetimes in photoemission from solids. Science. 2016;353:62–67.

[47] [47] Shi X, Liao CT, Tao Z, Cating-Subramanian E, Murnane MM, Hernández-García C, Kapteyn HC. Attosecond light science and its application for probing quantum materials. J Phys B Atomic Mol Phys. 2020;53(18): Article 184008.

[48] [48] Zhang H, Rousuli A, Zhang K, Luo L, Guo C, Cong X, Lin Z, Bao C, Zhang H, Xu S, et al. Tailored Ising superconductivity in intercalated bulk NbSe2. Nat Phys. 2022;18:1425–1430.10.1038/s41567-022-01778-7

[49] [49] Zhong H, Zhang H, Zhang H, Bao T, Zhang K, Xu S, Luo L, Rousuli A, Yao W, Denlinger JD, et al. Revealing the two-dimensional electronic structure and anisotropic superconductivity in a natural van der Waals superlattice (PbSe)1.14NbSe2. Phys Rev Mater. 2023;7:L041801.

[50] [50] Mahatha S, Patel K, Menon KS. Electronic structure investigation of MoS2 and MoSe2 using angle-resolved photoemission spectroscopy and ab initio band structure studies. J Phys Condens Matter. 2012;24: Article 475504.

[51] [51] Zhang Y, Chang TR, Zhou B, Cui YT, Yan H, Liu Z, Schmitt F, Lee J, Moore R, Chen Y, et al. Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2. Nat Nanotechnol. 2014;9:111–115.10.1038/nnano.2013.277

[52] [52] Ohta T, Bostwick A, Seyller T, Horn K, Rotenberg E. Controlling the electronic structure of bilayer graphene. Science. 2006;313(5789):951–954.

[53] [53] Zhang H et al. Self-energy dynamics and the mode-specific phonon threshold effect in Kekulé- ordered graphene. Natl Sci Rev. 2021;9(5): Article nwab175.

[54] [54] Ulstrup S, Johannsen JC, Cilento F, Miwa JA, Crepaldi A, Zacchigna M, Cacho C, Chapman R, Springate E, Mammadov S, et al. Ultrafast dynamics of massive Dirac fermions in bilayer graphene. Phys Rev Lett. 2014;112: Article 257401.

[55] [55] Ulstrup S, Johannsen JC, Crepaldi A, Cilento F, Zacchigna M, Cacho C, Chapman RT, Springate E, Fromm F, Raidel C, et al. Ultrafast electron dynamics in epitaxial graphene investigated with time-and angle-resolved photoemission spectroscopy. J Phys Condens Matter. 2015;27: Article 164206.

[56] [56] Aeschlimann S, Sato SA, Krause R, Chávez-Cervantes M, de Giovannini U, Hübener H, Forti S, Coletti C, Hanff K, Rossnagel K, et al. Survival of Floquet–Bloch states in the presence of scattering. Nano Lett. 2021;21(12):5028–5035.

[57] [57] Ito S, Schüler M, Meierhofer M, Schlauderer S, Freudenstein J, Reimann J, Afanasiev D, Kokh KA, Tereshchenko OE, Güdde J, et al. Build-up and dephasing of Floquet–Bloch bands on subcycle timescales. Nature. 2023;616:696–701.10.1038/s41586-023-05850-x