Huang Biqin, Gu Peifu, Yang Ligong
State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, Yugu Road, Hangzhou 310027, People's Republic of China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Oct;68(4 Pt 2):046601. doi: 10.1103/PhysRevE.68.046601. Epub 2003 Oct 7.
An effective method used to extend the band gap of hybrid one-dimensional photonic crystals is proposed. This method does not require one-dimensional photonic crystals used in the construction of hybrid photonic crystals to have omnidirectional photonic band gaps. This property gives the designers more freedom to select materials used in the design. Another advantage of this method is the ability to obtain very large omnidirectional photonic band gaps of hybrid structures without using too many one-dimensional photonic crystals. Some structures are constructed by this method to prove it. By using TiO2 and SiO2, the structure composed of four one-dimensional photonic crystals based on this method has been calculated and fabricated. The theoretical relative bandwidth of an omnidirectional photonic band gap is 41.33%, and the experimental result is up to 37%, which is very large in the visible region. By comparison, the theoretical relative bandwidth of the conventional method based on the frequency domain is only 14.26%.
提出了一种用于扩展混合一维光子晶体带隙的有效方法。该方法不要求用于构建混合光子晶体的一维光子晶体具有全向光子带隙。这一特性使设计者在选择设计中使用的材料时有更大的自由度。该方法的另一个优点是能够在不使用太多一维光子晶体的情况下获得混合结构非常大的全向光子带隙。通过这种方法构建了一些结构来进行验证。利用TiO₂和SiO₂，计算并制备了基于该方法的由四个一维光子晶体组成的结构。全向光子带隙的理论相对带宽为41.33%，实验结果高达37%，在可见光区域非常大。相比之下，基于频域的传统方法的理论相对带宽仅为14.26%。
