High-Order Angle and Polarization Resolved Reflection of Artificial Opal Photonic Crystal

We present angle resolved reflection measurements showing the polarization dependence of photonic band gap in artificial opal photonic crystals. The SiO2 opals were prepared using thermal-assisted cell method. The observation of well-defined diffraction pattern indicates the samples with high quality. The reflection measurements were analyzed in the high energy region up to a/l = 1.6. It is shown that the diffraction peaks depend on s- and p-polarized light illumination. The polarization anisotropy effect due to symmetric properties of opal structure. The experiment results agree fairly well with calculated photonic band structure and are also discussed with predictions based on group theory. Angular reflection has implications in polarized light scattering in plasmonic structures and metamaterials and is also useful in applications like nano scale polarization splitters and lasers.

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Photonic band gap resonators for high energy accelerators

Proceedings of International Conference on Particle Accelerators ◽

10.1109/pac.1993.309387 ◽

2002 ◽

Cited By ~ 1

Author(s):

S. Schultz ◽

D.R. Smith ◽

N. Kroll

Keyword(s):

Band Gap ◽

Photonic Band Gap ◽

High Energy ◽

Photonic Band

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High average power, high energy 155 μm ultra-short pulse laser beam delivery using large mode area hollow core photonic band-gap fiber

Optics Express ◽

10.1364/oe.19.000923 ◽

2011 ◽

Vol 19 (2) ◽

pp. 923 ◽

Cited By ~ 24

Author(s):

Xiang Peng ◽

Michael Mielke ◽

Timothy Booth

Keyword(s):

Photonic Band Gap ◽

Short Pulse ◽

Average Power ◽

High Energy ◽

Hollow Core ◽

Short Pulse Laser ◽

Beam Delivery ◽

Ultra Short Pulse ◽

Mode Area ◽

Photonic Band

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Optical Properties of Laser Lines and Fluorescent Spectrum in Cholesteric Liquid Crystal Laser

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2015.11176 ◽

2015 ◽

Vol 15 (10) ◽

pp. 7632-7639 ◽

Cited By ~ 2

Author(s):

Mi-Yun Jeong ◽

Ki Soo Chung ◽

J.W. Wu

Keyword(s):

Optical Properties ◽

Band Gap ◽

Photonic Band Gap ◽

Cholesteric Liquid Crystal ◽

Polarized Light ◽

Lasing Threshold ◽

Left Handed ◽

Fluorescent Spectrum ◽

Photonic Band ◽

Circular Polarized Light

We experimentally studied the comprehensive optical properties of the laser lines and fluorescent spectrum generated by a continuous tunable cholesteric liquid crystal (CLC) laser array. We found that the laser lines generated from a CLC with a right-handed circular helix were right-handed circular polarized and laser lines generated from a CLC with a left-handed circular helix were left-handed circular polarized. Inside the photonic band gap, the CLC structure with right-(left-) handed helicity suppressed the fluorescence generated with right (left) circular polarized light, and instead the suppressed right (left) circular polarized light energy moved to the outside of the photonic band gap, so we can say that the fluorescence intensity outside of the photonic band gap is enhanced with right (left) handed circular polarized light. Depending on the position of the photonic band gap, the fluorescence quantum yield value increased by up to ∼15%. These enhanced fluorescence intensities at the PBG edge will evolve into lasing at the upper lasing threshold. It is particularly interesting to see that the fluorescence intensity and shape could be controlled by adjusting the external geometrical factor of the photonic band gaps. The lasing threshold of the CLC lasers was in the range of 1.5–5.3 μJ/pulse. For CLC laser device applications, it is necessary and essential to know the optical properties of the generated laser lines and of the fluorescence spectrum.

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