[1] Armstrong, J. A. et al. Interactions between light waves in a nonlinear dielectric. Phys. Rev. 127, 1918–1939 (1962). doi: 10.1103/PhysRev.127.1918
[2] Lu, Y. Q. et al. Optical properties of an ionic-type phononic crystal. Science 284, 1822–1824 (1999). doi: 10.1126/science.284.5421.1822
[3] Smith, D. R., Pendry, J. B. & Wiltshire, M. C. K. Metamaterials and negative refractive index. Science 305, 788–792 (2004). doi: 10.1126/science.1096796
[4] Zhu, S. N., Zhu, Y. Y. & Ming, N. B. Quasi-phase-matched third-harmonic generation in a quasi-periodic optical superlattice. Science 278, 843–846 (1997). doi: 10.1126/science.278.5339.843
[5] Fiore, A. et al. Phase matching using an isotropic nonlinear optical material. Nature 391, 463–466 (1998). doi: 10.1038/35091
[6] Pierangeli, D. et al. Super-crystals in composite ferroelectrics. Nat. Commun. 7, 10674 (2016). doi: 10.1038/ncomms10674
[7] Li, F. et al. Giant piezoelectricity of Sm-doped Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals. Science 364, 264–269 (2019). doi: 10.1126/science.aaw8719
[8] Zhang, L. X. et al. Giant polarization in super-tetragonal thin films through interphase strain. Science 361, 494–497 (2018).
[9] Pan, H. et al. Ultrahigh-energy density lead-free dielectric films via polymorphic nanodomain design. Science 365, 578–582 (2019). doi: 10.1126/science.aaw8109
[10] Liao, W. Q. et al. A molecular perovskite solid solution with piezoelectricity stronger than lead zirconate titanate. Science 363, 1206–1210 (2019). doi: 10.1126/science.aav3057
[11] Hirohashi, J. et al. Control of specific domain structure in KNbO3 single crystals by differential vector poling method. J. Appl. Phys. 98, 034107 (2005). doi: 10.1063/1.2001148
[12] Liu, S. et al. Nonlinear wavefront shaping with optically induced three-dimensional nonlinear photonic crystals. Nat. Commun. 10, 3208 (2019). doi: 10.1038/s41467-019-11114-y
[13] Wei, D. Z. et al. Efficient nonlinear beam shaping in three-dimensional lithium niobate nonlinear photonic crystals. Nat. Commun. 10, 4193 (2019). doi: 10.1038/s41467-019-12251-0
[14] Imbrock, J. et al. Waveguide-integrated three-dimensional quasi-phase-matching structures. Optica 7, 28–34 (2020). doi: 10.1364/OPTICA.7.000028
[15] Mitsui, T. & Furuichi, J. Domain structure of rochelle salt and KH2PO4. Phys. Rev. 90, 193–202 (1953). doi: 10.1103/PhysRev.90.193
[16] Mori, S. et al. Evolution of a ferroelastic domain structure in an incommensurate phase of barium sodium niobate (Ba2NaNb5O15). Phys. Rev. B 52, 6158–6161 (1995). doi: 10.1103/PhysRevB.52.6158
[17] Broderick, N. G. R. et al. Hexagonally poled lithium niobate: a two-dimensional nonlinear photonic crystal. Phys. Rev. Lett. 84, 4345–4348 (2000). doi: 10.1103/PhysRevLett.84.4345
[18] Wei, D. Z. et al. Experimental demonstration of a three-dimensional lithium niobate nonlinear photonic crystal. Nat. Photonics 12, 596–600 (2018). doi: 10.1038/s41566-018-0240-2
[19] Xu, T. X. et al. Three-dimensional nonlinear photonic crystal in ferroelectric barium calcium titanate. Nat. Photonics 12, 591–595 (2018). doi: 10.1038/s41566-018-0225-1
[20] Wang, X. P. et al. Growth of cubic KTa1−xNbxO3 crystal by Czochralski method. J. Cryst. Growth 293, 398–403 (2006). doi: 10.1016/j.jcrysgro.2006.05.021
[21] Wang, J. Y. et al. Photorefractive properties and self-pumped phase conjugation of tetragonal Fe‐doped KTa1−xNbxO3 crystal. Appl. Phys. Lett. 61, 2761–2763 (1992). doi: 10.1063/1.108082
[22] Di Mei, F. et al. Giant broadband refraction in the visible in a ferroelectric perovskite. Nat. Photonics 12, 734–738 (2018). doi: 10.1038/s41566-018-0276-3
[23] DelRe, E. et al. Scale-free optics and diffractionless waves in nanodisordered ferroelectrics. Nat. Photonics 5, 39–42 (2011). doi: 10.1038/nphoton.2010.285
[24] Zhang, H. Y. et al. Optical and nonlinear optical study of KTa0.52Nb0.48O3 epitaxial film. Opt. Lett. 22, 1745–1747 (1997). doi: 10.1364/OL.22.001745
[25] Berger, V. Nonlinear photonic crystals. Phys. Rev. Lett. 81, 4136–4139 (1998). doi: 10.1103/PhysRevLett.81.4136
[26] Chen, B. Q. et al. High-efficiency broadband high-harmonic generation from a single quasi-phase-matching nonlinear crystal. Phys. Rev. Lett. 115, 083902 (2015). doi: 10.1103/PhysRevLett.115.083902
[27] Zhang, Y. et al. Nonlinear talbot effect. Phys. Rev. Lett. 104, 183901 (2010). doi: 10.1103/PhysRevLett.104.183901
[28] Jin, H. et al. Compact engineering of path-entangled sources from a monolithic quadratic nonlinear photonic crystal. Phys. Rev. Lett. 111, 023603 (2013). doi: 10.1103/PhysRevLett.111.023603
[29] Ahr, F. et al. Narrowband terahertz generation with chirped-and-delayed laser pulses in periodically poled lithium niobate. Opt. Lett. 42, 2118–2121 (2017). doi: 10.1364/OL.42.002118