Specular reflection of THz coherent acoustic phonons at solid-liquid interfaces

Author

Wen, Yu-Chieh ; Huang, Yu-Ru ; Chen, Hung-Ping ; Gusev, Vitalyi ; Sun, Chi-Kuang

Author_Institution

Dept. of Electr. Eng. & Inst. of Photonics & Optoelectron., Nat. Taiwan Univ., Taipei

fYear

2008

fDate

4-9 May 2008

Firstpage

1

Lastpage

2

Abstract

We experimentally demonstrate significant reductions and spectral oscillations in THz coherent-phonon reflectivity at GaN-water interfaces. Our results indicated that the nanoscaled interfacial structures and water molecular resonances are responsible for the observed specular coupling characteristics.

Keywords

III-V semiconductors; acousto-optical effects; gallium compounds; indium compounds; interface phonons; interface structure; nanostructured materials; oscillations; resonant states; submillimetre wave spectra; water; GaN-InGaN; GaN-water interfaces; THz coherent acoustic phonons; nanoscaled interfacial structures; solid-liquid interfaces; spectral oscillations; specular coupling characteristics; specular reflection; water molecular resonances; Acoustic measurements; Acoustic reflection; Couplings; Frequency measurement; Gallium nitride; Nanostructures; Phonons; Reflectivity; Resonance; Ultrafast optics; (000.2190) Experimental physics; (000.6850) Thermodynamics; (300.6430) Spectroscopy;

fLanguage

English

Publisher

iet

Conference_Titel

Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on

Conference_Location

San Jose, CA

Print_ISBN

978-1-55752-859-9

Type

conf

Filename

4572516