References
- K. A. Muller and H. Burkard, SrTiO3: An intrinsic quantum paraelectric below 4 K, Phys. Rev. B 19, 3593–3602 (1979).
- K. Inoue, N. Asai, and T. Samejima, Experimental Study of the Hyper-Raman Scattering Due to Raman Inactive Lattice Vibration in SrTiO3, J. Phys. Soc. Jpn. 50, 1291–1301 (1981).
- H. Vogt, Hyper-Raman tensors of the zone-center optical phonons in SrTiO3 and KTaO3, Phys. Rev. B 38, 5699–5708 (1988).
- U. Fano, Atomic Theory of Electromagnetic Interactions in Dense Materials, Phys. Rev. 103, 1202–1218 (1956).
- M. Born and K. Huang, Dynamical theory of crystal lattices, Oxford: Clarendon Press. (1956).
- C. H. Henry and J. J. Hopfield, Raman Scattering by Polaritons, Phys. Rev. Lett. 15: 964–966 (1965).
- A. S. Barker, JR., Transverse and Longitudinal Optic Mode Study in MgF2 and ZnF2, Phys. Rev. 136, A1290–1295 (1964).
- R. Claus, L. Merten, and J. Brandmüller, Light scattering by phonon-polaritons, Springer-Verlag, 1975.
- C.M. Tu, S.A. Ku, W.C. Chu, C.W. Luo, J.C. Chen, and C.C. Chi, Pulsed terahertz radiation due to coherent phonon-polariton excitation in〈110〉 ZnTe crystal, J. Appl. Phys. 112, 093110-1-5 (2012).
- A. J. Lee and H. M. Pask, Continuous wave, frequency-tunable terahertz laser radiation generated via stimulated polariton scattering, Optics Lett. 39, 442–445 (2014).
- H. C. Guo, W. M. Liu, and S. H. Tang, Terahertz time-domain studies of far-infrared dielectric response in 5 mol % MgO : LiNbO3 ferroelectric single crystal. J. Appl. Phys. 102, 033105-1-4 (2007).
- S. Kojima and T. Mori, Broadband terahertz time-domain spectroscopy of ferroelectric LiTaO3 : Phonon polariton Dispersion, AIP Proceedings. 1627, 52–57 (2014).
- S. Kojima and V. N. Novikov, Correlation of temperature dependence of quasielastic-light-scattering intensity and α-relaxation time, Phys. Rev. B 54, 222–227 (1996).
- L. Laughman, L. W. Davis, and T. Nakamura, Nakamura, Raman-Scattering Line Shape of the Soft E Polariton Mode in BaTiO3. Phys. Rev. B 6, 3322–3326 (1972).
- Y. Tominaga and T. Nakamura, Forward and backward Raman scattering from KH2PO4. Ferroelectrics 21, 317–318 (1978).
- S. Kojima, K. Kanehara, T. Hoshina, and T. Tsurumi, Optical phonons and polariton dispersions of congruent LiNbO3 studied by far-infrared spectroscopic ellipsometry and Raman scattering, Jpn. J. Appl. Phys. 55, 10TC02-1-4 (2016).
- E. K. H. Salje and S. C. Wruck Band Marais, Order parameter saturation at low temperatures-numerical results for displacive and o/d systems, Ferroelectrics 124, 185–8 (1991).
- W. G. Spitzer, Robert C. Miller, D. A. Kleinman, and L. E. Howarth, Far Infrared Dielectric Dispersion in BaTiO3, SrTiO3, and TiO2, Phys. Rev. 126, 1710–1721 (1962).
- J. Petzelt, T. Ostapchuk, I. Gregora, I. Rychetsky´, S. Hoffmann-Eifert, A. V. Pronin, Y. Yuzyuk, B. P. Gorshunov, S. Kamba, V. Bovtun, J. Pokorny´, M. Savinov, V. Porokhonskyy, D. Rafaja, P. Vaneˇk, A. Almeida, M. R. Chaves, A. A. Volkov, M. Dressel, and R. Waser, Dielectric, infrared, and Raman response of undoped SrTiO3 ceramics: Evidence of polar grain boundaries, Phys. Rev. B 64, 184111-1-10 (2001).
- J. C. Galzerani and R. S. Katiyar, The infrared reflectivity in SrTiO3 and the antidistortive transition. Solid State Commun. 41, 515–519 (1982).
- K. Kanehara, T. Hoshina, H. Takeda, and T. Tsurumi, Measurement of ionic polarization of SrTiO3 single crystal by far-infrared spectroscopic ellipsometry, Appl. Phys. Lett. 105, 042901-1-3 (2014).
- N. Matsumoto, T. Fujii, K. Kageyama, H. Takagi, T. Nagashima, and M. Hangyo, Measurement of the Soft-Mode Dispersion in SrTiO3 by Terahertz Time-Domain Spectroscopic Ellipsometry, Jpn. J. Appl. Phys. 48, 19KC11-1-4 (2002).
- S. Kojima and T. Mori, Terahertz time-domain spectroscopy of Raman inactive phonon-polariton in strontium titanate, Ferroelectrics 499, 100–106 (2016).
- V. N. Denisov, B. N. Mavrin, V. B. Podobedev, and Kh. E. Sterin, Hyper Raman scattering by polaritons in centrally symmetric SrTiO3 crystal, JETP Lett. 31, 102–105 (1980).
- K. Inoue, N. Asai, and T. Samejima, Observation of the phonon polariton in the centrosymmetric crystal of SrTiO3 by Hyper Raman scattering. J. Phys. Soc. Jpn. 48, 1787–1788 (1980).
- H. J. Bakker, S. Hunsche, and H. Kurz, Coherent phonon polaritons as probes of anharmonic phonons in ferroelectrics. Rev. Mod. Phys. 70, 523–536 (1998).