Lecture 5 - Photonic crystal An Introduction

Lecture 5 - Photonic crystal An Introduction - C. Photonic...

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Unformatted text preview: C. Photonic crystal: An Introduction Photonic crystal: Periodic arrangement of dielectric (metallic, polaritonic) objects. Lattice constants comparable to the wavelength of light in the material. A worm ahead of its time Sea Mouse and its hair Normal incident light http://www.physics.usyd.edu.au/~nicolae/seamouse.html 20cm Off-Normal incident light Fast forward to 1987 E. Yablonovitch Inhibited spontaneous emission in solid state physics and electronics Physical Review Letters, vol. 58, pp. 2059, 1987 S. John Strong localization of photons in certain disordered dielectric superlattices Physical Review Letters, vol. 58, pp. 2486, 1987 Face-centered cubic lattice Complete photonic band gap On-Chip Photonic Crystal 1 m Si Solgaard et al, Stanford Lin et al, Sandia National Lab. Fabrication process Using Lithography 1) SOI wafer 2) Ebeam lithography 3) Plasma etching Si substrate Si 0.25 m SiO 2 1.0 m 6) Edge polishing 5) HF Wet etching 4) Ebeam lithography (J. Pan and J. S. Harris) Photonic Crystal Fiber Macroscopic preform Furnace to soften the silica gas Photonic crystal fiber P. Russell, Science, 299, 358, 2003 Self-Assembled Three-Dimensional Photonic Crystals Y. A. Vaslov, Nature, 414, 289 (2001) The emphasis of recent breakthroughs The use of strong index contrast, and the developments of nano- fabrication technologies , which leads to entirely new sets of phenomena....
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This note was uploaded on 01/10/2011 for the course ECE 695s taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

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Lecture 5 - Photonic crystal An Introduction - C. Photonic...

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