Document Detail


A Carpet Cloak for Visible Light.
MedLine Citation:
PMID:  21619019     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We report an invisibility carpet cloak device, which is capable of making an object undetectable by visible light. The cloak is designed using quasi conformal mapping and is fabricated in a silicon nitride waveguide on a specially developed nanoporous silicon oxide substrate with a very low refractive index (n<1.25). The spatial index variation is realized by etching holes of various sizes in the nitride layer at deep subwavelength scale creating a local effective medium index. The fabricated device demonstrates wideband invisibility throughout the visible spectrum with low loss. This silicon nitride on low index substrate can also be a general scheme for implementation of transformation optical devices at visible frequencies.
Authors:
Majid Gharghi; Christopher Gladden; Thomas Zentgraf; Yongmin Liu; Xiaobo Yin; Jason Valentine; Xiang Zhang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-5-27
Journal Detail:
Title:  Nano letters     Volume:  -     ISSN:  1530-6992     ISO Abbreviation:  -     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-5-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
NSF Nanoscale Science and Engineering Center (NSEC), University of California , Berkeley 3112 Etcheverry Hall, UC Berkeley, California 94720, United States.
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