Energy level schemes for far-infrared quantum well lasers

被引：12
|
作者：
Lyubomirsky, I [1 ]
Hu, Q
机构：
[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA
来源：
APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 03期
关键词：
D O I：
10.1063/1.121815
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We analyze the physics of three-level and Four-level systems for optically pumped far-infrared quantum well lasers. The higher complexity of the four-level system offers a great advantage because it gives more flexibility to design the dipole matrix elements and phonon scattering rates to enhance both? the gain and emission efficiency. We propose a four-level scheme that is superior in gain and emission efficiency by an order of magnitude over previous designs. (C) 1998 American Institute of Physics.
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页码：300 / 302
页数：3
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