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Organic Vapor Jet Printing _OVJP_

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									       Understanding of Negative Refraction by Periodic Composites
                                                                                      0
                                                                                                o
                                                                                            =26 FOM=100
                                                                                    -0.5
                                                                                            =18o FOM=100
                                                                                                o
                                                                                            =26 FOM=3




                                                            Effective index (n r)
                                                                                     -1
                               Diagram of NIM                                               =18o FOM=3
                               negative refraction                                  -1.5

                               experiments
                                                                                     -2
                                                                                                                            o
                                                                                                             nTIR=-1/sin26
                                                                                    -2.5
                                                                                              Predicted index as a function of
                                                                                     -3       loss (FOM) and Bloch wave vector
                                                                                       -1    -0.8       -0.6     -0.4        -0.2   0
                                                                                                 Real Bloch wavevector kB(/a)
                                                                                                                        r
                                                           Impact
                                                           A quantitative, unified theory based on a generalized phase
                                                           matching condition and complex Bloch band structure is
                                                           developed

                                                           Funding
                                                           Air Force Office of Scientific Research

Objective                                                  Publications
To provide a universal explanation for observed negative   X. Zhang et al , Physical Review Letters, 101, 267401 (2008)
refraction in two type of periodic composites:             X. Zhang et al , Optics Express, 18, 1151 (2010)
lossless dielectric photonic crystals and lossy metal
dielectric negative index materials (NIMs) .               Contact
                                                           Xuhuai Zhang zhangxh@umich.edu

								
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