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Massachusetts Institute of Technology Chiyan Luo Michelle Povinelli Dr. Steven Johnson J. D. Joannopoulos DoD MURI on Metamaterials Photonic Crystals as.

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Presentation on theme: "Massachusetts Institute of Technology Chiyan Luo Michelle Povinelli Dr. Steven Johnson J. D. Joannopoulos DoD MURI on Metamaterials Photonic Crystals as."— Presentation transcript:

1 Massachusetts Institute of Technology Chiyan Luo Michelle Povinelli Dr. Steven Johnson J. D. Joannopoulos DoD MURI on Metamaterials Photonic Crystals as Metamaterials Annual Review 2004

2 DoD MURI on Metamaterials Journal publications: Luo, C., Johnson, S. G., Joannopoulos, J.D., and Pendry, J.B., “Subwavelength Imaging in Photonic Crystals,” Physical Review B 68, (2003). Luo, C., and Joannopoulos, J.D., Book Chapter in “Negative Refraction Metamaterials: Fundamental Properties & Applications,” John Wiley & Sons in press (2004). Luo, C., Soljacic, M., and Joannopoulos, J.D., “Superprism Effect Based on Phase Velocities,” Optics Letters 29, (2004). Exploration of negative refraction, superlensing, and superprism (phase-related) phenomena in photonic crystal systems. Extension of Microwave Left-Handed Material Behavior to Optical Frequencies. (Pendry, Chen, and Schultz/Smith) Negative Refraction, Sub-wavelength Imaging, and Superprism Phenomena in Photonic Crystals

3 DoD MURI on Metamaterials AANR with a positive group velocity & positive effective index of refraction FieldIntensity    = (2  c/a)  ~ 12

4 DoD MURI on Metamaterials    = (2  c/a), narrow beam width    = (2  c/a), broad beam width

5 DoD MURI on Metamaterials pbg lens x z Subwavelength imaging by coupling to bound surface states  ~ 5.97GHz Photonic crystal (black dashed curve): 0.22 Rayleigh criterion for infinite-aperture lens: 0.50 Chen, Schultz/Smith  ~ 38  ~ 12

6 DoD MURI on Metamaterials Photonic Crystal Group-velocity Superprism argument: Photonic Crystal Phase-velocity Superprism argument:

7 DoD MURI on Metamaterials incident  = 1 0 leads to transmitted  = 20 0

8 DoD MURI on Metamaterials Journal publications: Luo, C., Joannopoulos, J.D., Narayanaswamy, A., and Chen, G., “Thermal Radiation from Photonic Crystals: A Direct Calculation,” PRL, submitted for publication (2004). Exploration of Kirchoff’s law and investigation of lossy metallodielectric photonic crystals as efficient emitters of thermal radiation. (Chen, Pendry) Photonic Crystal Structures For Enhanced Thermal Radiation

9 DoD MURI on Metamaterials Separate calculations of Absorptivity (from transmission & reflection simulations) Emissivity (from ensemble averaged radiation in numerical simulations using Langevin approach to thermal fluctuations of EM field) Enhancement of Thermal Radiation from Photonic Crystals Photonic Crystal System: Square lattice of lossy metallic rods in air consisting of:

10 DoD MURI on Metamaterials Future Directions: Continue theoretical support of experimental (Chen, Schultz/Smith) investigations of subwavelength imaging at microwave lengthscales. Extend this work to 2D/3D metallodielectric photonic crystals at infrared lengthscales (Chen). Explore negative effective permeability at optical lengthscales using polariton photonic crystals (Pendry). Continue investigation of superprism phenomena in 3D periodic photonic crystal systems. Continue investigation of thermal radiation from 3D photonic crystal systems (Chen). Explore photonic crystal Cerenkov radiation as a potential source of radiation at frequencies of interest, e.g. as a source for THz radiation (Schultz/Smith, Chen).


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