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Journal of Applied Physics / Volume 107 / Issue 9 / ARTICLES / Lasers, Optics, and Optoelectronics

J. Appl. Phys. 107, 093108 (2010); http://dx.doi.org/10.1063/1.3383045 (6 pages)

Phase properties of reflected light in photonic band gap

Qiao-Feng Dai1, Sheng Lan1, Li-Jun Wu1, and He-Zhou Wang2

1Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
2State Key Laboratory of Optoelectronic Materials and Technologies, Zhongshan (Sun Yat-Sen) University, Guangzhou 510275, China

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(Received 30 October 2009; accepted 10 March 2010; published online 7 May 2010)

We find that the phase shifts of reflected light within band gap of two-dimensional photonic crystal (PC) are as follows: with frequency altering from the lower edge to the upper edge of first stop band, the reflection phase shift varies from −π to 0 for the PC’s unit cell with the high-index material near the center, while it varies from 0 to π for that with low-index material near the center. For the higher-order stop band, there exists a certain value of filling fraction, which makes the phase shifts in higher-order stop bands almost the same as that in the first stop band. When the filling fraction is far from that value, the phase shifts are significantly different. The further study on the Bloch modes demonstrates that their distribution of electric field and magnetic field determines the phase shifts. Moreover, we have found that, in the overlap area of transverse magnetic and transverse electric stop band, the phase difference between two polarizations of reflected light can remain invariant in a broad frequency region. Based on this property, the broadband and angle-insensitive phase retarders are designed. These interesting phase characteristics will bring about many potential applications.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. THEORY
  3. THE PHASE PROPERTIES OF SINGLE POLARIZATION REFLECTED LIGHT IN THE FIRST STOP BAND
  4. THE PROPERTIES OF SINGLE POLARIZATION REFLECTED LIGHT IN THE HIGHER-ORDER STOP BAND
  5. THE REFLECTION PHASE FOR DIFFERENT INCIDENT ANGLE
  6. THE REFLECTION PHASE RELATIONSHIP BETWEEN TWO POLARIZATIONS
  7. APPLICATION
    1. Broadband phase retarder
    2. Angle-insensitive phase retarder
  8. CONCLUSIONS

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KEYWORDS and PACS

Keywords

light reflection, optical retarders, photonic band gap, photonic crystals

PACS

  • 42.70.Qs

    Photonic bandgap materials

  • 42.25.Gy

    Edge and boundary effects; reflection and refraction

  • 42.79.Ci

    Filters, zone plates, and polarizers

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3383045

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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