THz acoustic spectroscopy based on GaN nanostructures

Kung Hsuan Lin, Dzung Han Tsai, Kuan Jen Wang, Sheng Hui Chen, Kai Lun Chi, Jin Wei Shi, Po Cheng Chen, Jinn Kong Sheu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Due to the high attenuation in vitreous silica, acoustic attenuations in the THz regime are typically measured by incoherent techniques such as Raman, neutron, and X-ray scattering. Here, we utilized multiple-quantum-well structures to demonstrate acoustic spectroscopy of vitreous silica up to THz regime. The acoustic properties of silica thin films prepared by chemical deposition methods were characterized in the sub-THz regime. This technique may be useful in resolving debated issues relating to Boson peak around 1 THz.

Original languageEnglish
Title of host publicationUltrafast Phenomena and Nanophotonics XVIII
StatePublished - 2014
EventUltrafast Phenomena and Nanophotonics XVIII - San Francisco, CA, United States
Duration: 2 Feb 20145 Feb 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceUltrafast Phenomena and Nanophotonics XVIII
Country/TerritoryUnited States
CitySan Francisco, CA


  • GaN
  • acoustic spectroscopy
  • glass
  • ultrafast spectroscopy


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