Document Detail


Nano-lithographically fabricated titanium dioxide based visible frequency three dimensional gap photonic crystal.
MedLine Citation:
PMID:  19550574     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Photonic crystals (PC) have emerged as important types of structures for light manipulation. Ultimate control of light is possible by creating PCs with a complete three dimensional (3D) gap [1, 2]. This has proven to be a considerable challenge in the visible and ultraviolet frequencies mainly due to complications in integrating transparent, high refractive index (n) materials with fabrication techniques to create ~ 100nm features with long range translational order. In this letter, we demonstrate a nano-lithography approach based on a multilevel electron beam direct write and physical vapor deposition, to fabricate four-layer titania woodpile PCs that potentially exhibit complete 3D gap at visible wavelengths. We achieved a short wavelength bandedge of 525nm with a 300nm lattice constant PC. Due to the nanoscale precision and capability for defect control, the nanolithography approach represents an important step toward novel visible photonic devices for lighting, lasers, sensing and biophotonics.
Authors:
Ganapathi Subramania; Yun-Ju Lee; Igal Brener; Ting-Shan Luk; Paul G Clem
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics express     Volume:  15     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2009-06-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  13049-57     Citation Subset:  -    
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