Generation, detection, and propagation of nano-acoustic waves in piezoelectric semiconductors

Kung-Hsuan Lin; Chia-Lung Hsieh; Cheng-Ta Yu; Chang-Chi Pan; Jen-Inn Chyi; Stacia K. Keller; Steven P. DenBaars; Chi-Kuang Sun

doi:10.1117/12.587820

13 April 2005 Generation, detection, and propagation of nano-acoustic waves in piezoelectric semiconductors (Invited Paper)

Kung-Hsuan Lin, Chia-Lung Hsieh, Cheng-Ta Yu, Chang-Chi Pan, Jen-Inn Chyi, Stacia K. Keller, Steven P. DenBaars, Chi-Kuang Sun

Author Affiliations +

Proceedings Volume 5725, Ultrafast Phenomena in Semiconductors and Nanostructure Materials IX; (2005) https://doi.org/10.1117/12.587820
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

Piezoelectric semiconductor with heterostructure can be treated as a piezoelectric transducer for the generation of acoustic waves with wavelength less than 10 nm (nano-acoustic waves) by optical technique. This optical piezoelectric transducer has also been utilized for the detection of the nano-acoustic waves (NAW). In this paper, we discuss the generation, detection, and propagation of nano-acoustic waves in piezoelectric semiconductors. We demonstrate that the acoustic frequency of the NAW can be tuned by an optical control technique. Besides, we have also developed an acoustic sensor with THz bandwidth which can be used to study NAW propagation control devices such as nano-phononic bandgap crystal. We demonstrated that the roughness of an interface can be evaluated by the NAW with a resolution less than 1 nm through the acoustic phasefront distortion effect. With the optical piezoelectric transducer, nano-ultrasonics, which is analogous to typical ultrasonics but on the nanometer scale, has been successfully developed.

Citation Download Citation

Kung-Hsuan Lin, Chia-Lung Hsieh, Cheng-Ta Yu, Chang-Chi Pan, Jen-Inn Chyi, Stacia K. Keller, Steven P. DenBaars, and Chi-Kuang Sun "Generation, detection, and propagation of nano-acoustic waves in piezoelectric semiconductors (Invited Paper)", Proc. SPIE 5725, Ultrafast Phenomena in Semiconductors and Nanostructure Materials IX, (13 April 2005); https://doi.org/10.1117/12.587820

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