Quantum well infrared photodetector design using Transfer Matrix Method

Author(s):  
Ricardo A. T. Santos ◽  
Fabio D. P. Alves ◽  
Christian G. R. Taranti ◽  
Lester A. Faria ◽  
Alain Andre Quivy
2010 ◽  
Vol 663-665 ◽  
pp. 191-194
Author(s):  
Qiang Hua Lu ◽  
Ying Jun Gao ◽  
Mei Na Jiao

By means of the transfer matrix method, transmission spectra and dispersion relationships of photonic crystals (AB) m (CD) n (AB) m (CD) n (AB) m are investigated herein. The number and highness of transmission peaks are found to relate closely with the repeating periodicity n, and (CD)n medium of positive- or negative- refractive index as well. The results may be helpful for designing optical filters of desired properties.


2005 ◽  
Vol 19 (24) ◽  
pp. 3705-3712
Author(s):  
YAN ZHANG ◽  
BEN-YUAN GU ◽  
CHUNG-PING LIU

We present a detailed investigation of the properties of the confined states in the photonic quantum-well (PQW) structures with the use of the transfer-matrix method. The influences of various physical and geometrical parameters of the systems on the characteristics of the confined states are systematically explored. The results show that the features of the confined modes can be engineered by adjusting system parameters. It may provide a useful way to control the merits of the defect modes in order to match the requirements in photonic or microwave devices.


2004 ◽  
Vol 18 (03) ◽  
pp. 379-393 ◽  
Author(s):  
LI ZHANG ◽  
HONG-JING XIE

Under dielectric continuum approximation, by adopting the transfer matrix method, interface optical (IO) phonon modes and the Fröhlich electron–IO-phonon interaction Hamiltonian in a multilayer coaxial cylindrical quantum-well wire (QWW) were deduced and investigated. Numerical calculations on a four-layer GaAs / Al x Ga 1-x As QWW have been performed. Results reveal that there are six branches of IO phonon modes. When the wave vector in z-direction kz and the azimuthal quantum number m are small, the dispersion frequencies of IO modes sensitively depend on kz and m. When kz and m are relatively large, with the increasing of kz and m, the frequency for each mode converges the limit frequency value of IO mode in single heterostructure, and the electrostatic potential distribution of each mode tends to be more and more localized at the interfaces, meanwhile, the coupling between the electron–IO-phonon becomes weaker and weaker. The calculation also shows that the phonon modes with higher frequencies have more significant contribution to the electron–phonon interaction. At last, it is found that kz and m have analogous effects on the frequencies and the electrostatic potentials of the IO phonons.


2009 ◽  
Author(s):  
Ricardo A. Tavares Santos ◽  
Fabio Durante P. Alves ◽  
Christian G. R. Taranti ◽  
Jayr de Amorim Filho ◽  
Gamani Karunasiri

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