EVALUATION OF WAVE-FUNCTION COHERENCE LENGTH IN A WAVE-GUIDING STRUCTURE EMBEDDING A INGAAS/INP SHORT-PERIOD SUPERLATTICE

被引：6

作者：

CAMPI, D

CACCIATORE, C

NEITZERT, HC

RIGO, C

CORIASSO, C

机构：

[1] CSELT-Centro Studi e Laboratori Telecomunicazioni, 10148 TORINO

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1993年 / 14卷 / 04期

关键词：

SUPERLATTICES; WAVE-FUNCTION COHERENCE; INGAAS/INP;

D O I：

10.1006/spmi.1993.1134

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the coherence length of the electronic wavefunction in an InGaAs/InP superlattice structure prepared by chemical beam epitaxy. The sample, a p-i-n structure, was processed to form a waveguide modulator, and transmittance and photocurrent measurements were taken at varying photon energy and bias. Clear spectral features were observed in the transmittance measurements that are related to the Wannier-Stark effect. The spectral structures bear information about the coherence length of the electronic wave-function, which was found to be about 45 nm at room temperature.

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收藏

页码：253 / 256

页数：4

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