Volume 9, Issue 1 (lasers in medicine 2012)
lmj 2012, 9(1): 25-34 |
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Extraordinary optical transmission (EOT) effect of perforated metallic films on quantum well IR photodetector responsivity for diagnosing Troponin I enzyme. lmj 2012; 9 (1) :25-34
URL: http://icml.ir/article-1-242-en.html
URL: http://icml.ir/article-1-242-en.html
Abstract: (12822 Views)
Background: This investigation has explored the quantum well photodetector responsivity for detecting Surface Enhanced Raman Scattering (SERS) of Troponin enzyme I to be implemented in diagnosing heart attack or myocardial anfractuous.
Material and Methods: In this study, we show enhanced transmission in perforated metallic film using Coupled Mode Analytical Method thorough PEC approximation. Implementing the surface impedance boundary condition in the formalism, the effect of surface plasmon polaritons in the transmission spectrum has been analyzed. In addition, we study the effect of a specific substrate on the transmission spectrum. According to a simple model based on multi reflection formalism in Fabry-Perot cavity, it is found that quantum well Al0.45Ga0.55As/AlAs detector responsivity did enhance.
Results: A transmitted light thorough a periodic two dimensional square hole arrays shows anomalous maximum in the transmission spectrum. This phenomenon can be used to enhance electromagnetic field penetration into quantum well layers. It is observed that detector responsivity boosted by introducing perforated metallic films.
Conclusion: A near IR quantum well photodetector is a suitable device for diagnosing diseases thorough transforming optical signals into electrical ones. There is a tradeoff between improvement of detector responsivity for sensing Troponin I and efficiency of detector.
Material and Methods: In this study, we show enhanced transmission in perforated metallic film using Coupled Mode Analytical Method thorough PEC approximation. Implementing the surface impedance boundary condition in the formalism, the effect of surface plasmon polaritons in the transmission spectrum has been analyzed. In addition, we study the effect of a specific substrate on the transmission spectrum. According to a simple model based on multi reflection formalism in Fabry-Perot cavity, it is found that quantum well Al0.45Ga0.55As/AlAs detector responsivity did enhance.
Results: A transmitted light thorough a periodic two dimensional square hole arrays shows anomalous maximum in the transmission spectrum. This phenomenon can be used to enhance electromagnetic field penetration into quantum well layers. It is observed that detector responsivity boosted by introducing perforated metallic films.
Conclusion: A near IR quantum well photodetector is a suitable device for diagnosing diseases thorough transforming optical signals into electrical ones. There is a tradeoff between improvement of detector responsivity for sensing Troponin I and efficiency of detector.
Keywords: Troponin I, Responsivity, Coupled Mode Method, Extraordinary optical Transmission, Quantum Well, Surface Enhanced Raman Scattering
Educational: Applicable |
Subject:
General
Received: 2011/12/11 | Accepted: 2012/03/1 | Published: 2012/04/15
Received: 2011/12/11 | Accepted: 2012/03/1 | Published: 2012/04/15
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