Scholarlink

<p>The generation and propagation of coherent phonons in short-period InAs/GaSb superlattices grown on GaSb(001) substrates are investigated using laser photoacoustic techniques. It is shown that the excitation of a (110)-oriented cleaved edge of the heterostructure by femtosecond laser pulses leads to the generation of coherent subterahertz phonons that propagate at a small angle with respect to the (110) surface and interact efficiently with electromagnetic radiation polarized perpendicularly to the superlattice layers. The revealed features of the interaction between electromagnetic radiation and folded acoustic modes have allowed us to propose a new method for the local analysis of the crystal structure of InAs/GaSb superlattices with an accuracy comparable to that of X-ray techniques.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Coherent Subterahertz Phonons in InAs/GaSb Superlattices

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年12月1日

查看全文
  • A. Yu. Klokov,
  • N. Yu. Frolov,
  • A. I. Sharkov,
  • V. S. Krivobok,
  • A. V. Klekovkin,
  • G. N. Eroshenko,
  • I. I. Minaev

摘要

The generation and propagation of coherent phonons in short-period InAs/GaSb superlattices grown on GaSb(001) substrates are investigated using laser photoacoustic techniques. It is shown that the excitation of a (110)-oriented cleaved edge of the heterostructure by femtosecond laser pulses leads to the generation of coherent subterahertz phonons that propagate at a small angle with respect to the (110) surface and interact efficiently with electromagnetic radiation polarized perpendicularly to the superlattice layers. The revealed features of the interaction between electromagnetic radiation and folded acoustic modes have allowed us to propose a new method for the local analysis of the crystal structure of InAs/GaSb superlattices with an accuracy comparable to that of X-ray techniques.