Broadband terahertz ultrasonic transducer based on a laser-driven piezoelectric semiconductor superlattice

NCU Institutional Repository > 資訊電機學院 > 電機工程學系 > 期刊論文 > Item 987654321/106703

請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/106703

題名:	Broadband terahertz ultrasonic transducer based on a laser-driven piezoelectric semiconductor superlattice
作者:	綦振瀛;Maznev, A.A.;Manke, Kara J.;Lin, Kung-Hsuan;Nelson, Keith A.;Sun, Chi-Kuang;Chyi, Jen-Inn
貢獻者:	資訊電機學院電機工程學系
關鍵詞:	Acoustics;Attenuation;Broadband;Exact sciences and technology;Femtosecond;Fundamental areas of phenomenology (including applications);Indium gallium nitrides;Laser-generated acoustic waves;Linear acoustics;Physics;Semiconductor superlattices;Semiconductors;solar (photovoltaic), solar (thermal), solid state lighting, phonons, thermal conductivity, thermoelectric, defects, mechanical behavior, charge transport, spin dynamics, materials and chemistry by design, optics, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing);sounds;spectral analysis;spectroscopy;Structural acoustics and vibration;Superlattices;temperature;Terahertz acoustics;Transducers;transducers (equipment);Transduction;acoustical devices for the generation and reproduction of sound;Ultrasonic transducers
日期:	2012-01-01
上傳時間:	2026-04-23 13:37:01 (UTC+8)
出版者:	Amsterdam: Elsevier B.V
摘要:	摘要： ► We are aiming to extend acoustic spectroscopy across the whole Brillouin zone. ► Femtosecond laser pulses excite multiple acoustic modes of a 10-period InGaN/GaN superlattice. ► Seven modes spanning a range from 0.36 to 2.5 THz are detected. ► Acoustic waves up to ∼2 THz are not significantly attenuated within the superlattice. Spectral characteristics of laser-generated acoustic waves in an InGaN/GaN superlattice structure are studied at room temperature. Acoustic vibrations in the structure are excited with a femtosecond laser pulse and detected via transmission of a delayed probe pulse. Seven acoustic modes of the superlattice are detected, with frequencies spanning a range from 0.36 to 2.5 THz. Acoustic waves up to ∼2 THz in frequency are not significantly attenuated within the transducer which indicates excellent interface quality of the superlattice. The findings hold promise for broadband THz acoustic spectroscopy. 其他題名： Ultrasonics 出版者： Amsterdam: Elsevier B.V 出版日期： 2012 出處： Ultrasonics, 2012, Vol.52 (1), p.1-4 版權： 2011 Elsevier B.V. 版權： 2015 INIST-CNRS 版權： Copyright © 2011 Elsevier B.V. All rights reserved. 識別號： ISSN: 0041-624X 識別號： ISSN: 1874-9968 識別號： EISSN: 1874-9968 識別號： DOI: 10.1016/j.ultras.2011.07.007 識別號： PMID: 21872899 識別號： CODEN: ULTRA3
顯示於類別:	[電機工程學系] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	22	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing

資料載入中.....