期刊
APPLIED PHYSICS LETTERS
卷 99, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3665414
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资金
- EPSRC [EP/I004602/1]
- Futuro in Ricerca [PHOCOS-RBFR08E7VA]
- Engineering and Physical Sciences Research Council [EP/I004602/1] Funding Source: researchfish
- EPSRC [EP/I004602/1] Funding Source: UKRI
We have fabricated a nano-laminate by alternating metal and gain medium layers, the gain dielectric consisting of a polymer incorporating optically pumped dye molecules. From standard reflection-transmission experiments, we show that, at a visible wavelength, both the real and the imaginary parts of the permittivity epsilon(parallel to) attain very small values and we measure, at lambda = 604 nm, vertical bar epsilon(parallel to)vertical bar = 0.04 which is 21.5% smaller than its value in the absence of optical pumping. Our investigation thus proves that a medium with a permittivity with very small modulus, a key condition promising efficient subwavelength optical steering, can be actually synthesized. (C) 2011American Institute of Physics. [doi:10.1063/1.3665414]
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