LARGE STARK SHIFTS OF THE LOCAL TO GLOBAL STATE INTERSUBBAND TRANSITIONS IN STEP QUANTUM-WELLS

被引：59
作者：
MII, YJ
KARUNASIRI, RPG
WANG, KL
CHEN, M
YUH, PF
机构：
来源：
APPLIED PHYSICS LETTERS | 1990年 / 56卷 / 20期
关键词：
D O I：
10.1063/1.103193
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Large Stark shifts of intersubband transitions in a step quantum well are observed for the first time. The Stark shifts are ∼8 and 7 meV at ∼18 kV/cm for the 1→2 and 1→3 intersubband transitions, respectively, while the Stark shift of a similar transition in a square quantum well is only about 0.5 meV under the same bias condition. The intersubband transitions in step quantum wells can be either red or blue Stark shifted depending on the direction of the applied electric field. The large Stark shifts of intersubband transitions in the step quantum wells can be exploited for the fabrication of optical modulators operating in the range from mid to far infrared.
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页码：1986 / 1988
页数：3
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