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23 August 2011 Optical characteristics of different Bragg planes of 3D polystyrene photonic crystals in the LU and LK path of the first Brillouin zone of close packed fcc structure with large band gap depth and steeper band edges
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Proceedings Volume 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics; 81730I (2011) https://doi.org/10.1117/12.897919
Event: International Conference on Fiber Optics and Photonics, 2010, Guwahati, India
Abstract
We report the angle dependent transmission spectral characteristics of 331 nm diameter polystyrene (PS) photonic crystals (PhCs) with large band gap depth and steeper band edges which allow one to identify different Bragg planes promptly. The spectral characteristics recorded in the clock-wise (CW) and anti clock-wise (ACW) directions follow the LK and LU paths in the first Brillouin zone (FBZ) of the face centered cubic (fcc) structure. We obtained 25% of the band gap depth for (220) plane in the LK path, which is the highest value reported till now to the best of our knowledge. Interestingly we observed that (200) plane features for lower angles and (111) plane features for higher angles in the LU path while in the LK path the dips follow the (111) plane fit completely from lower angles to higher angle of incidence and the possible reasons are discussed.
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Shadak Alee K., Carina B. M., Sriram G., and Narayana Rao Desai "Optical characteristics of different Bragg planes of 3D polystyrene photonic crystals in the LU and LK path of the first Brillouin zone of close packed fcc structure with large band gap depth and steeper band edges", Proc. SPIE 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics, 81730I (23 August 2011); https://doi.org/10.1117/12.897919
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