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This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 6 April 2010, reviews electromagnetic and optical metamaterials for aerospace use. It was produced in FY 2009 under the Advanced Aerospace Weapon System Applications (AAWSA) Program. The report covers super-lenses and hyper-lenses for imaging objects smaller than the diffraction limit, slowing light to shrink components, energy-harvesting absorbers, and one-way chiral devices. It concludes that metamaterials matter for aerospace because they allow smaller, lighter components.
UNCLASSIFIED/"5OR 8FFl811it USE ONfr than the zeroth one. This confirm~ the recently predicted effect that for IPMs one can indeed observe a very counterintuitive effect: sub-diffraction waves can inaeed propagate With less loss than.the diffraction-limited ones. The second milestone involves demonstrating the possibility of observing the interference of sub-diffraction electromagnetic waves inside the 1PM using the two- beam/two-detector technique. Figure 10 demonstrates this interference pattern which reveals the phase advance of the sub-diffraction waves inside the 1PM. While we have so far demonstrated the interference between the first Fourier component of the grating (sub-diffraction) and the zeroth Fourier component, we see the possibility of interfering even more sub-diffraction waves (2nd and 3rd). IPlorlerence scao. 10.eoo micro•• " -0e1eetor 2 - "+I·.,. ·o· orders ol------....:De=kl=ct=or...,•-...'11...." ._•-....1•..ord=e=rs---~ , 4 ~ • H "lnier~ ar...,r. 1131 Orrkrons I t •· 1:t 'y H 1a :>l r:..b-t•r-tDl'l•oOl'l.'AC.~ =B:~~rmi.. :-:i~-1~:r.=-t Figure 13. (Left}: Experimental Setup for 2-Beams/2-Detectors Interferometric Measurement in Our Lab. (Right): Preliminary Experimental Results: infrared intensity Oh two detectors (red and black lines) are (i) different from each other; (ii) have a sinusoidal dependence on the delay line position (in microns), which is equivalent to the phase delay between the. two beams; (iii) are shffted In phase by the amount equal to twice the phase difference between the 1"' order (sub-diffraction) and 0th order (radiation zone) Fourier components of the bottom grating. Measurements taken at >.= 10.8 1,1m and >.= 11.3 μm. With these two milestones established, it is now possible to conduct true sub- wavelength imaging experiments using two (or more) far-field detectors and jointly processing their inputs. 15 UNCkASSIFIED//l?GA 9Fl?l1iil.l.tk UII 9tlk¥
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 27 pages are in the text index: search them above, or from the library's search.