PAPERS
Wang Xiaodong, Wu Xuming, 王青, Wang Qing, Cao Yulian and He Guorong
Abstract: The optical characteristics and the effect on a VCSEL resonant cavity of an Al0.9Ga0.1As/AlyGa1-yAs/GaAs/AlxGa1-xAs DBR with linearly graded interfaces are analyzed numerically.The relations are established between the refractive index and the thickness of the graded interfaces.The reflectance spectrum and the reflective phase shift are calculated for an abrupt GaAs/Al0.9Ga0.1As DBR and a graded interface DBR using the characteristic matrix method.The influence of the graded layer on the reflectivity and reflective phase shift of the DBR is analyzed.The result shows that an extra graded layer as a phase matching layer must be added in front of the graded interface DBR near the VCSEL resonant cavity to obtain the condition of phase matching at the central wavelength.The accurate thickness of the phase matching layer and homogeneous layer are obtained by numerical analysis on the condition of phase matching.
Key words: VCSEL, DBR, reflectance spectrum, reflective phase shift, characteristic matrix method
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Received: 18 August 2015 Revised: 19 April 2006 Online: Published: 01 November 2006
| Citation: |
Wang Xiaodong, Wu Xuming, 王青, Wang Qing, Cao Yulian, He Guorong. Numerical Analysis of the Effect of a DBR with Graded Interfaces on the Resonant Cavity of a VCSEL[J]. Journal of Semiconductors, 2006, 27(11): 2011-2014.
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Wang X D, Wu X M, Wang Q, Cao Y L, He G R. Numerical Analysis of the Effect of a DBR with Graded Interfaces on the Resonant Cavity of a VCSEL[J]. Chin. J. Semicond., 2006, 27(11): 2011.
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