New class of broadly tunable middle-infrared electrically pumped solid-state lasers

新型宽范围可调谐中红外电泵浦固体激光器

• 批准号: 0901376
• 负责人: Sergey Mirov
• 金额: $ 39.99万
• 依托单位: University of Alabama at Birmingham
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0901376&HistoricalAwards=false
• 关键词: New; class; broadly; tunable; middle

The major objectives of the effort include the following: Comprehensive study of the mechanisms of carriers' TM ions energy transfer due to carrier impact and recombination in bulk and quantum confined structures. Design, fabrication, and characterization of TM doped II-VI structures for electroluminescence and laser studies. Comprehensive studies and optimization of lasing characteristics of electrically pumped TM-doped II-VI structures.Intellectual merit: For realization of electrically pumped lasers based on transition metal (TM) doped II-VI structures two conditions should be satisfied: (i) sustainable excitation of the host by electrical current; and (ii) effective energy transfer from the host to the mid-IR lasing TM impurity. The feasibility of the first condition is supported by development of II-VI LED sources with a lifetime exceeding 10,000 hours. The second condition can be achieved either via carrier impact energy transfer or via recombination processes. We envision that understanding and optimization of the mechanisms of carrier TM ions energy transfer will enable significant improvement in the efficiency of energy transfer for carrier impact mechanisms, and especially for TM ions excitation via recombination processes in bulk p-n junctions and in quantum confined structures. Broader impacts: The workforce development will involve (i) incorporation of findings into four courses taught to two campuses of the University of Alabama System, (ii) graduate student training, and (iii) undergraduate student research through REU site. In addition, the innovative approaches to be investigated will lead to ground-breaking advances for low-cost electrically pumped broadly tunable mid-IR laser sources which will impact medical, environmental, scientific, and counter-terrorism applications.

主要目标包括：全面研究载流子在体结构和量子限制结构中的碰撞和复合引起的载流子离子能量转移机制。用于电致发光和激光研究的TM掺杂II-VI族结构的设计、制造和表征。电泵浦TM掺杂的II-VI结构的激光特性的综合研究和优化。知识价值：为了实现基于过渡金属（TM）掺杂的II-VI结构的电泵浦激光器，应该满足两个条件：（i）通过电流对基质的可持续激发;以及（ii）从基质到中红外激光TM杂质的有效能量转移。第一个条件的可行性得到了寿命超过10，000小时的II-VI LED光源的开发的支持。第二个条件可以通过载流子碰撞能量转移或通过复合过程来实现。我们设想，载流子TM离子能量转移的机制的理解和优化将能够显着提高载流子碰撞机制的能量转移的效率，特别是对于TM离子激发通过复合过程中的散装p-n结和量子限制结构。更广泛的影响：劳动力开发将涉及（一）将调查结果纳入亚拉巴马系统大学两个校区的四门课程中，（二）研究生培训，以及（三）通过REU网站进行本科生研究。此外，待研究的创新方法将导致低成本电泵浦宽可调谐中红外激光源的突破性进展，这将影响医疗，环境，科学和反恐应用。