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Modification of the second-order optical nonlinearities in AlGaAs asymmetric multiple quantum well waveguides by quantum well intermixing

 

作者: M. W. Street,   N. D. Whitbread,   C. J. Hamilton,   B. Vo¨gele,   C. R. Stanley,   D. C. Hutchings,   J. H. Marsh,   J. S. Aitchison,   G. T. Kennedy,   W. Sibbett,  

 

期刊: Applied Physics Letters  （AIP Available online 1997）
卷期: Volume 70, issue 21  

页码: 2804-2806

 

ISSN:0003-6951

 

年代: 1997

 

DOI:10.1063/1.119064

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We demonstrate that a quantum well intermixing technique can be used to control the second-order nonlinearity&khgr;zzz(2)in an AlGaAs asymmetric coupled quantum well waveguide structure at 1.52 &mgr;m. Photoluminescence measurements also indicate that the spatial resolution of the impurity-free vacancy disordering process used for quantum well intermixing is better than 1.5 &mgr;m which should be sufficient for first-order quasiphase-matched second harmonic generation. ©1997 American Institute of Physics.

 

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