Optically pumped electrically driven THz generation - An approach for an efficient room-temperature THz quantum cascade laser?

被引：7
|
作者：
Waldmueller, Ines
Chow, Weng W.
Wanke, Michael C.
机构：
[1] Sandia Natl Labs, Albuquerque, NM 87185 USA
[2] Cardiff Univ, Cardiff CF10 3XQ, Wales
[3] Univ Arizona, Tucson, AZ 85721 USA
来源：
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2007年 / 13卷 / 05期
关键词：
gain without inversion; intersubband semiconductor laser; Manley-Rowe quantum limit; optical conversion; quantum cascade laser (QCL); terahertz (THz) generation;
D O I：
10.1109/JSTQE.2007.903584
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We investigate an optically pumped electrically driven laser scheme as an approach for terahertz (THz) quantum cascade lasers.The scheme keeps the advantages of optical conversion, and increases the efficiency by recycling the pump photons. Using a microscopic theory based on the Maxwell-semiconductor Bloch equations, we demonstrate that the approach offers a path to room-temperature THz generation. Furthermore, we show how successful recovery of the pump intensity can yield optical conversion efficiencies exceeding the Manley-Rowe limit.
引用
收藏
页码：1084 / 1088
页数：5
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