Characterizing the nanoacoustic superlattice in a phonon cavity using a piezoelectric single quantum well

Kung Hsuan Lin, Chieh Feng Chang, Chang Chi Pan, Jen Inn Chyi, Stacia Keller, Umesh Mishra, Steven P. Denbaars, Chi Kuang Sun

研究成果: 雜誌貢獻期刊論文同行評審

15 引文 斯高帕斯(Scopus)

摘要

We have experimentally and theoretically investigated, both in the time domain and in the frequency domain, the characteristics of a nanoacoustic mirror, which is a 17-period 8 nm8 nm Al0.7 Ga0.3 N Al0.2 Ga0.8 N superlattice and its first phononic band gap frequency is centered at ∼280 GHz. By using a femtosecond optical pulse to excite and detect the nanoacoustic strain pulses with an In0.2 Ga0.8 N single quantum well, we directly measured the transient dynamics of the acoustic nanowaves inside a phonon cavity composed of the studied nanoacoustic mirror. The phase-resolved reflection transfer function of the phononic band gap superlattice and the properties of the nanophononic cavity have been experimentally obtained and investigated.

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文章編號143103
期刊Applied Physics Letters
89
發行號14
DOIs
出版狀態已出版 - 2006

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