中国物理B ›› 2009, Vol. 18 ›› Issue (6): 2383-2388.doi: 10.1088/1674-1056/18/6/044

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Fabrication of high-quality three-dimensional photonic crystal heterostructures

刘正奇, 冯天华, 戴峭峰, 吴立军, 兰胜   

  1. Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
  • 收稿日期:2008-10-24 修回日期:2008-11-20 出版日期:2009-06-20 发布日期:2009-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10674051), the Program for Innovative Research Team of the Higher Education of Guangdong Province, China (Grant No 06CXTD005), and the Key Program of Extracurricular Research in South China Normal University (SCNU), China (Grant No 08GDKC02).

Fabrication of high-quality three-dimensional photonic crystal heterostructures

Liu Zheng-Qi(刘正奇), Feng Tian-Hua(冯天华), Dai Qiao-Feng(戴峭峰), Wu Li-Jun(吴立军), and Lan Sheng(兰胜)†   

  1. Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
  • Received:2008-10-24 Revised:2008-11-20 Online:2009-06-20 Published:2009-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10674051), the Program for Innovative Research Team of the Higher Education of Guangdong Province, China (Grant No 06CXTD005), and the Key Program of Extracurricular Research in South China Normal University (SCNU), China (Grant No 08GDKC02).

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摘要： Three-dimensional photonic crystal (PC) heterostructures with high quality are fabricated by using a pressure controlled isothermal heating vertical deposition technique. The formed heterostructures have higher quality, such as deeper band gaps and sharper band edges, than the heterostructures reported so far. Such a significant improvement in quality is due to the introduction of a thin TiO2 buffer layer between the two constitutional PCs. It is revealed that the disorder caused by lattice mismatch is successfully removed if the buffer layer is used once. As a result, the formed heterostructures possess the main features in the band gap of constitutional PCs. The crucial role of the thin buffer layer is also verified by numerical simulations based on the finite-difference time-domain technique.

Abstract: Three-dimensional photonic crystal (PC) heterostructures with high quality are fabricated by using a pressure controlled isothermal heating vertical deposition technique. The formed heterostructures have higher quality, such as deeper band gaps and sharper band edges, than the heterostructures reported so far. Such a significant improvement in quality is due to the introduction of a thin TiO2 buffer layer between the two constitutional PCs. It is revealed that the disorder caused by lattice mismatch is successfully removed if the buffer layer is used once. As a result, the formed heterostructures possess the main features in the band gap of constitutional PCs. The crucial role of the thin buffer layer is also verified by numerical simulations based on the finite-difference time-domain technique.

Key words: photonic crystal heterostructure, pressure controlled isothermal heating vertical deposition, finite-difference time-domain technique

中图分类号:  (Methods of deposition of films and coatings; film growth and epitaxy)

  • 81.15.-z
42.70.Qs (Photonic bandgap materials) 81.05.-t (Specific materials: fabrication, treatment, testing, and analysis)