Polaron effect on the optical rectification in spherical quantum dots with electric fieldProject supported by the National Natural Science Foundation of China (Grant No. 11364028), the Major Projects of the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 2013ZD02), and the Project of "Prairie Excellent" Engineering in Inner Mongolia Autonomous Region, China

The polaron effect on the optical rectification in spherical quantum dots with a shallow hydrogenic impurity in the presence of electric field is theoretically investigated by taking into account the interactions of the electrons with both confined and surface optical phonons. Besides, the interacti...

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Bibliographic Details
Published in:Chinese physics B 2016-10, Vol.25 (10)
Main Authors: Feng, Zhen-Yu, Yan, Zu-Wei
Format: Article
Language:English
Subjects:
optical rectification
polaron effect
spherical quantum dot
Online Access:Get full text
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Summary:The polaron effect on the optical rectification in spherical quantum dots with a shallow hydrogenic impurity in the presence of electric field is theoretically investigated by taking into account the interactions of the electrons with both confined and surface optical phonons. Besides, the interaction between impurity and phonons is also considered. Numerical calculations are presented for typical Zn1−xCdxSe/ZnSe material. It is found that the polaronic effect or electric field leads to the redshifted resonant peaks of the optical rectification coefficients. It is also found that the peak values of the optical rectification coefficients with the polaronic effect are larger than without the polaronic effect, especially for smaller Cd concentrations or stronger electric field.
ISSN:1674-1056
DOI:10.1088/1674-1056/25/10/107804