...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica status solidi, B. Basic research >Two-color femtosecond spectroscopy of blue-shifted InAs/AlGaAs quantum dots
【24h】

Two-color femtosecond spectroscopy of blue-shifted InAs/AlGaAs quantum dots

机译：蓝移InAs / AlGaAs量子点的双色飞秒光谱

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ultrafast relaxation phenomena in self-organized InAs/AlGaAs quantum dots with ground state transition energies of 1.42 eV are analyzed with different methods of fermosecond spectroscopy. A time-correlated luminescence experiment of an ensemble of InAs islands reveals a picosecond relaxation mechanism of carriers within the quantum dots. Moreover, modifications of the quantum dot properties due to excitation of the surrounding wetting layer is found. Employing a shadow-mask technique, a structure containing only a few zero-dimensional objects is studied. Selectively creating electron-hole pairs in excited states of approximately ten quantum dots, we observe characteristic line shifts of their ground state absorption in a two-color fermosecond transmission experiment. This finding demonstrates the feasibility of ultrafast studies of single self-assembled quantum dots. [References: 13]
机译：用不同的费秒光谱法分析了基态跃迁能为1.42 eV的自组织InAs / AlGaAs量子点中的超快弛豫现象。一组InAs岛的时间相关的发光实验揭示了量子点内载流子的皮秒弛豫机制。而且，发现由于周围润湿层的激发而引起的量子点特性的改变。利用荫罩技术，研究了仅包含几个零维物体的结构。在大约十个量子点的激发态中有选择地创建电子-空穴对，我们在双色菲秒透射实验中观察到它们的基态吸收的特征线位移。这一发现证明了对单个自组装量子点进行超快速研究的可行性。 [参考：13]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号