CAREER: Coherent Manipulation of Carriers and Nonlinear Optical Processes in Semiconductor Quantum Wells Via Intense Multi-Cycle Terahertz Pulses

职业：通过强多周期太赫兹脉冲对半导体量子阱中的载流子和非线性光学过程进行相干操纵

• 批准号: 0449426
• 负责人: Yun-Shik Lee
• 金额: --
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-01 至 2011-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0449426&HistoricalAwards=false
• 关键词: CAREER; Coherent; Manipulation; Carriers; Nonlinear

This CAREER award deals with research that aims to explore time-dependent carrier dynamics and nonlinear optical effects in semiconductor quantum wells (QWs) in the THz frequency range with novel techniques for generating and shaping intense multi-cycle THz pulses. Exploiting syntheses of arbitrary THz pulses, the proposed experimental schemes focus on precise and coherent control of quantum wavepacket dynamics representing internal transitions of confined excitons and intersubband transitions in semiconductor QWs. Quantum coherences and nonlinear responses of the fundamental excitations will be investigated by manipulating and monitoring temporal evolution of the wavepackets via THz time-domain spectroscopy (THz-TDS) with intense multi-cycle THz pulses. THz-TDS permits precise measurements of phase as well as amplitude of the wavepackets, thus complete quantum information of the system can be obtained. The educational program will use interactive Java programs to demonstrate the basic concepts and results of the research program based on time-domain analysis of light-matter interaction, wave propagation, and quantum wavepacket dynamics. This will be used to contribute to course revision and development of upper-division physics courses including courses in the Paradigms in Physics Project which will be disseminated nationally. Funding for this award is provided by the AMOP Program in the Physics Division in conjunction with the Condensed Matter Physics Program in the Division of Materials Research.

该职业奖涉及旨在通过THZ频率范围的半导体量子井（QW）探索时间依赖时间的载体动力学和非线性光学效应的研究，并采用新型技术来产生和塑造强烈的多循环T​​HZ脉冲。利用任意THZ脉冲的合成，提出的实验方案着重于对量子波袋动力学的精确和相干控制，这些动力学代表了半导体QW中的密闭激子和sublubband跃迁的内部过渡。通过通过THZ时域光谱（THZ-TDS）操纵和监测波袋的时间演化，将研究和监测强烈的多循环T​​HZ脉冲的量子相干和非线性响应。 THZ-TDS允许对波袋的相位和幅度进行精确测量，因此可以获得系统的完整量子信息。教育计划将使用交互式Java程序来基于光 - 摩擦互动，波浪传播和量子贴上的Wavepacket Dynamics的时间域分析来证明研究计划的基本概念和结果。这将用于促进上级物理课程的修订和开发，包括物理项目范式中的课程，该课程将在全国范围内传播。该奖项的资金由物理部门的AMOP计划与材料研究部的凝聚态物理计划一起提供。