Physics – Optics
Scientific paper
2011-05-27
Physics
Optics
Submitted for publication on Applied Physics Letters
Scientific paper
We have fabricated a layered nano-composite by alternating metal and gain medium layers, the gain dielectric consisting of a polymer incorporating optically pumped dye molecules. Exploiting an improved version of the effective medium theory, we have chosen the layers thicknesses for achieving a very small value of the real part of the permittivity epsilon_\| (parallel to the layers plane) at a prescribed visible wavelength. From standard reflection-transmission experiments on the optically pumped sample we show that, at a visible wavelength, both the real and the imaginary parts of the permittivity epsilon_\ attain very small values and we measure | \epsilon_\| | = 0.04 at lambda = 604 nm, amounting to a 21.5-percent decrease of the minimum | \epsilon_\| | in the absence of optical pumping. Our investigation thus proves that a medium with a dielectric permittivity with very small modulus, a key condition which should provide efficient subwavelength optical steering, can be actually synthesized.
Ciattoni Alessandro
Di Falco Andrea
Rizza Carlo
No associations
LandOfFree
Gain assisted nanocomposite multilayers with near zero permittivity modulus at visible frequencies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gain assisted nanocomposite multilayers with near zero permittivity modulus at visible frequencies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gain assisted nanocomposite multilayers with near zero permittivity modulus at visible frequencies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-665200