RESONANT STARK TUNING OF 2ND-ORDER SUSCEPTIBILITY IN COUPLED QUANTUM-WELLS

被引:76
作者
SIRTORI, C
CAPASSO, F
SIVCO, DL
HUTCHINSON, AL
CHO, AY
机构
[1] AT and T Bell Laboratories, Murray Hill
关键词
D O I
10.1063/1.106999
中图分类号
O59 [应用物理学];
学科分类号
摘要
The first observation of the resonant Stark tuning of second harmonic generation is reported. Our AlInAs/GaInAs asymmetric coupled-well structures are engineered in such a way that certain intersubband transitions (1 --> 2 and 2 --> 3) exhibit a large Stark shift equal to the potential drop between the centers of the wells. Thus the second-order susceptibility \chi-2-omega(2)\ exhibits a pronounced peak when the bound states are made equally spaced by the application of an electric field and HBAR-omega = DELTA-E12. A peak \chi-2-omega(2)\ = 7.5 X 10(-8) m/V, approximately 200 times the bulk values in InAs and GaAs, has been measured.
引用
收藏
页码:151 / 153
页数:3
相关论文
共 10 条