Real-time observation of phonon-polariton dynamics in ferroelectric LiNbO3 in time-frequency space

被引：21

作者：

Ikegaya, Yuki ^{[1
]}

Sakaibara, Hiroyuki ^{[1
]}

Minami, Yasuo ^{[1
]}

Katayama, Ikufumi ^{[1
]}

Takeda, Jun ^{[1
]}

机构：

[1] Yokohama Natl Univ, Grad Sch Engn, Dept Phys, Yokohama, Kanagawa 2408501, Japan

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 06期

基金：

日本学术振兴会;

关键词：

IMAGING SPECTROSCOPY; PUMP-PROBE; TERAHERTZ; LIGHT;

D O I：

10.1063/1.4928480

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate the real-time observation of phonon-polariton propagation in ferroelectric LiNbO3 using a single-shot spectroscopic setup that employs an echelon mirror. The echelon mirror provides a spatially encoded time delay for the probe pulse; therefore, the ultrafast transient behavior of materials can be detected on a single-shot basis. Using optical Kerr gate apparatus, forward and backward propagating E-mode phonon-polaritons were simultaneously induced via an impulsive stimulated Raman scattering process, and subsequently, their dynamics were readily mapped in time-frequency space using heterodyne detection. The two phonon-polaritons appeared on opposite sides of the central probe wavelength and were symmetrically imaged against the ordinary and extraordinary probe lights. By taking into account coupling of the lowest E-mode phonon-polariton to a low-frequency relaxational mode, not only the phonon-polariton dispersion but also the wavevector dependence of the damping rate was unveiled and quantitatively evaluated. (C) 2015 AIP Publishing LLC.

引用

页数：4

共 24 条

[1] Wavevector sensitive phonon excitation by ultrashort light pulses [J].

Albert, O ;

Gautier, CA ;

Loulergue, JC ;

Etchepare, J .

SOLID STATE COMMUNICATIONS, 1998, 107 (10) :567-570

[2] INVESTIGATION OF ANHARMONIC LATTICE-VIBRATIONS WITH COHERENT PHONON POLARITONS [J].

BAKKER, HJ ;

HUNSCHE, S ;

KURZ, H .

PHYSICAL REVIEW B, 1994, 50 (02) :914-920

[3] DIELECTRIC PROPERTIES AND OPTICAL PHONONS IN LINBO3 [J].

BARKER, AS ;

LOUDON, R .

PHYSICAL REVIEW, 1967, 158 (02) :433-+

[4] IMPULSIVE STIMULATED RAMAN-SCATTERING EXPERIMENTS IN THE POLARITON REGIME [J].

DOUGHERTY, TP ;

WIEDERRECHT, GP ;

NELSON, KA .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1992, 9 (12) :2179-2189

[5] Design of high-energy terahertz sources based on optical rectification [J].

Fulop, J. A. ;

Palfalvi, L. ;

Almasi, G. ;

Hebling, J. .

OPTICS EXPRESS, 2010, 18 (12) :12311-12327

[6] Femtosecond real-time pump-probe imaging spectroscopy [J].

Furukawa, N ;

Mair, CE ;

Kleiman, VD ;

Takeda, J .

APPLIED PHYSICS LETTERS, 2004, 85 (20) :4645-4647

[7] Velocity matching by pulse front tilting for large-area THz-pulse generation [J].

Hebling, J ;

Almási, G ;

Kozma, IZ ;

Kuhl, J .

OPTICS EXPRESS, 2002, 10 (21) :1161-1166

[8] Single-cycle terahertz pulses with amplitudes exceeding 1 MV/cm generated by optical rectification in LiNbO3 [J].

Hirori, H. ;

Doi, A. ;

Blanchard, F. ;

Tanaka, K. .

APPLIED PHYSICS LETTERS, 2011, 98 (09)

[9]

Kampfrath T, 2013, NAT PHOTONICS, V7, P680, DOI [10.1038/nphoton.2013.184, 10.1038/NPHOTON.2013.184]

[10] Ferroelectric Soft Mode in a SrTiO3 Thin Film Impulsively Driven to the Anharmonic Regime Using Intense Picosecond Terahertz Pulses [J].

Katayama, I. ;

Aoki, H. ;

Takeda, J. ;

Shimosato, H. ;

Ashida, M. ;

Kinjo, R. ;

Kawayama, I. ;

Tonouchi, M. ;

Nagai, M. ;

Tanaka, K. .

PHYSICAL REVIEW LETTERS, 2012, 108 (09)

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