Time-Domain Infrared-Visible-Visible Sum-Frequency Generation for Surface Vibrational Spectroscopy

被引：6

作者：

Nomoto, Tomonori ^{[1
]}

Onishi, Hiroshi ^{[2
]}

机构：

[1] Kobe Univ, Mol Photosci Res Ctr, Nada Ku, Kobe, Hyogo 6578501, Japan

[2] Kobe Univ, Dept Chem, Grad Sch Sci, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 52期

关键词：

2ND-HARMONIC GENERATION; RAMAN-SPECTROSCOPY; RUTILE; TIO2; SCATTERING; RADIATION; CONSTANTS; DYNAMICS; MODES; FIELD;

D O I：

10.1021/jp908308t

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We propose a new surface-sensitive, time-domain measurement of low-frequency vibrational coherence. A transverse optical phonon was coherently excited at 180 cm(-1) on a TiO(2) (110) wafer by femtosecond terahertz pulses of the far-infrared region. The probability of second harmonic generation was modulated by the coherent lattice vibrations and probed using visible light pulses. The observable depth was limited as small as 3 nm by tuning the wavelength of the second harmonic light to be resonant with the electronic absorption of TiO(2).

引用

页码：21467 / 21470

页数：4

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