STIMULATED-EMISSION PROCESSES IN ZN1-XCDXSE/ZNSE MULTIQUANTUM WELLS

被引：25

作者：

JEN, JY ^{[1
]}

TSUTSUMI, T ^{[1
]}

SOUMA, I ^{[1
]}

OKA, Y ^{[1
]}

FUJIYASU, H ^{[1
]}

机构：

[1] SHIZUOKA UNIV, FAC ENGN, HAMAMATSU, SHIZUOKA 432, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1993年 / 32卷 / 10B期

关键词：

ZN1-XCDXSE/ZNSE; MULTIQUANTUM WELLS; QUANTUM WELL EXCITONS; STIMULATED EMISSIONS; OPTICAL GAIN; BLUE LASER DIODES;

D O I：

10.1143/JJAP.32.L1542

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A stimulated emission effect has been studied in Zn1-xCdxSe/ZnSe (x=0.3) multiquantum wells (MQWs) with the well width of 7 to 70 angstrom. The luminescence spectrum of the quantum well (QW) exciton at 4.2 K is shifted from the absorption spectrum by 10-12 meV to the lower-energy side. The deviation of the peak energy of the luminescence shows that the excitons in the MQW are inhomogeneously broadened by the monolayer fluctuation of the QW width. Stimulated emission is observed in the low-energy shoulder of the exciton luminescence band, which shifts to lower energies with increasing excitation intensity. The gain process is explained by the exciton-exciton scattering in the MQWs.

引用

页码：L1542 / L1545

页数：4

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