Çok Tabakalı Hiperbolik Metamalzeme ile Oluşturulan Geniş Band Optik Soğurucu

Bu çalışmada, özellikle optik bölgede geniş band soğurma gösteren çok tabakalı bir hiperbolik metamalzeme tasarlanmıştır. Tasarlanan yapıda üç farklı metal (Ag, Au ve Al) ve yarıiletken bir malzeme (InGaAs) kullanılmıştır. Hesaplamalarda Transfer Matris Metodundan (TMM) yararlanılmıştır. Bu yöntem kullanılarak tasarlanan çok tabakalı yapıların optik soğurma ve yansıma spektrumları gelme açısına bağlı olarak incelenmiştir. Metal-dielektrik çok tabakalı yapıların hiperbolik dispersiyon gösterdiği bölgeler belirlenmiş, ayrıca gelme açısına bağlı kontur grafikleri elde edilmiştir. Yapılan hesaplamalar sonucunda, metal olarak gümüşün kullanıldığı heteroyapının en iyi soğurma spektrumu verdiği gözlenmiştir.

Anahtar Kelimeler:

Çok tabakalı hiperbolik metamalzeme, Optik soğurucu, Transfer Matris Metodu

The Broad Band Optical Absorber Designed By Multilayered Hyperbolic Metamaterial

In this study, a multilayered hyperbolic metamaterial has been designed that exhibits a broad band optical absorption, especially in optical region. In that proposed structure, three different metals (Ag, Au, and Al) and a semiconductor material (InGaAs) have been employed. Optical calculations are performed by using the Transfer Matrix Method. Optical absorption and reflection spectra are determined for different incident angle values. Hyperbolic dispersion regions of the metal-dielectric multilayered structures have been determined, also contour graphs of the structures, depend on the incident angles are obtained. Consequently, the best optical absorption response is found for the structure in which Ag is used as metal component.

Keywords:

Multilayered hyperbolic metamaterial, Optical absorber, Transfer Matrix Method,

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