Semiconductor quantum dot superlattice for coherent acoustic phonon emission

A. Khitun, K. L. Wang

研究成果: Conference article同行評審

摘要

We present a novel concept of using quantum dot superlattices for coherent acoustic phonon emission. Coherent lattice wave generation is proposed by collective dot vibrations in a self-assembled quantum dot array, where superlattice structure acts as a phonon resonator. The dots vibrations are synchronized by an external electric field. The proposed scheme has advantage of low phonon scattering rate in quantum dots, that enables generating high intensity phonon beams at low amplitude of the pumping electric field. The advantage is illustrated by numerical simulations carried out for Si/Ge superlattice. The proposed scheme may find many phonon applications, such as for local temperature control, phonon assisted optical transition enhancement, and characterization of low-dimensional structures.

原文English
頁(從 - 到)368-371
頁數4
期刊Proceedings of SPIE - The International Society for Optical Engineering
5023
DOIs
出版狀態Published - 2003
事件10th International Symposium on Nanostructures: Physics and Technology - St. Petersburg, Russian Federation
持續時間: 2002 六月 172002 六月 21

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程

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