Measurement of far-infrared intersubband spontaneous emission from optically pumped quantum wells

被引：15

作者：

Lyubomirsky, I ^{[1
]}

Hu, Q

Melloch, MR

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA

[3] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 21期

关键词：

D O I：

10.1063/1.122666

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present the results of an experiment to measure far-infrared intersubband spontaneous emission from optically pumped quantum wells. A four-level laser design scheme was implemented using a coupled triple quantum well structure for optical pumping from E-1 to E-4 with a CO2 laser. The phonon scattering rates were designed to optimize the far- infrared emission efficiency and population inversion between E-3-E(2)similar to 30 meV. The spontaneous emission spectrum was successfully resolved to reveal an emission peak at 30.8 meV with a linewidth of 7 meV. (C) 1998 American Institute of Physics. [S0003-6951(98)01847-6].

引用

页码：3043 / 3045

页数：3

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