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Adaptive on-chip control of nano-optical fields with optoplasmonic vortex nanogates.

Boriskina SV, Reinhard BM - Opt Express (2011)

Bottom Line: We introduce here an alternative approach, which is based on exploiting the strong sub-wavelength spatial phase modulation in the near-field of resonantly-excited high-Q optical microcavities integrated into plasmonic nanocircuits.We show that optical powerflow though nanoscale plasmonic structures can be dynamically molded by engineering interactions of microcavity-induced optical vortices with noble-metal nanoparticles.The proposed strategy of re-configuring plasmonic nanocircuits via locally-addressable photonic elements opens the way to develop chip-integrated optoplasmonic switching architectures, which is crucial for implementation of quantum information nanocircuits.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry & The Photonics Center, Boston University, Boston, MA 02215, USA. sboriskina@gmail.com

No MeSH data available.


Phase-operated nanoscale field intensity switching in the plasmonic nanoparticle chain. (a) A schematic of an optoplasmonic structure composed of a linear chain of Au nanoparticles coupled to a dielectric microsphere (D = 1.2µm, h = 90nm, w = 20nm, d = 130nm, no = 2.4). The points where the field intensity is monitored are marked as P1 and P2. (b) The near-field intensity spectra evaluated at P1 (blue) and P2 (red). The three select wavelength λ1 = 666.74nm, λ2 = 667.45nm, and λ3 = 667.87nm mark the spectral points where the intensities at P1 and P2 are either equal (λ2) or one of them reaches its peak value (λ1, λ3). (c-e) Single-frame excerpts from the movie (Media 4) showing the evolution of the electric field intensity (/E/2//E0/2) distribution and the optical power flow through the nanoparticle chain in the y-z plane at x = 0 at λ1, λ2 and λ3, respectively. The arrows point in the direction of the local powerflow, and the length of each arrow is proportional to the local value of the Poynting vector amplitude.
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g005: Phase-operated nanoscale field intensity switching in the plasmonic nanoparticle chain. (a) A schematic of an optoplasmonic structure composed of a linear chain of Au nanoparticles coupled to a dielectric microsphere (D = 1.2µm, h = 90nm, w = 20nm, d = 130nm, no = 2.4). The points where the field intensity is monitored are marked as P1 and P2. (b) The near-field intensity spectra evaluated at P1 (blue) and P2 (red). The three select wavelength λ1 = 666.74nm, λ2 = 667.45nm, and λ3 = 667.87nm mark the spectral points where the intensities at P1 and P2 are either equal (λ2) or one of them reaches its peak value (λ1, λ3). (c-e) Single-frame excerpts from the movie (Media 4) showing the evolution of the electric field intensity (/E/2//E0/2) distribution and the optical power flow through the nanoparticle chain in the y-z plane at x = 0 at λ1, λ2 and λ3, respectively. The arrows point in the direction of the local powerflow, and the length of each arrow is proportional to the local value of the Poynting vector amplitude.

Mentions: The demonstrated ability of optoplasmonic elements to combine efficient nanofocusing of the optical energy with the strategies developed in this article to dynamically mold and re-direct the energy flow on the nanoscale can be used to develop more complex reconfigurable elements and networks. An example of such a reconfigurable optoplasmonic element is shown in Fig. 5 (a)Fig. 5


Adaptive on-chip control of nano-optical fields with optoplasmonic vortex nanogates.

Boriskina SV, Reinhard BM - Opt Express (2011)

Phase-operated nanoscale field intensity switching in the plasmonic nanoparticle chain. (a) A schematic of an optoplasmonic structure composed of a linear chain of Au nanoparticles coupled to a dielectric microsphere (D = 1.2µm, h = 90nm, w = 20nm, d = 130nm, no = 2.4). The points where the field intensity is monitored are marked as P1 and P2. (b) The near-field intensity spectra evaluated at P1 (blue) and P2 (red). The three select wavelength λ1 = 666.74nm, λ2 = 667.45nm, and λ3 = 667.87nm mark the spectral points where the intensities at P1 and P2 are either equal (λ2) or one of them reaches its peak value (λ1, λ3). (c-e) Single-frame excerpts from the movie (Media 4) showing the evolution of the electric field intensity (/E/2//E0/2) distribution and the optical power flow through the nanoparticle chain in the y-z plane at x = 0 at λ1, λ2 and λ3, respectively. The arrows point in the direction of the local powerflow, and the length of each arrow is proportional to the local value of the Poynting vector amplitude.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3298770&req=5

g005: Phase-operated nanoscale field intensity switching in the plasmonic nanoparticle chain. (a) A schematic of an optoplasmonic structure composed of a linear chain of Au nanoparticles coupled to a dielectric microsphere (D = 1.2µm, h = 90nm, w = 20nm, d = 130nm, no = 2.4). The points where the field intensity is monitored are marked as P1 and P2. (b) The near-field intensity spectra evaluated at P1 (blue) and P2 (red). The three select wavelength λ1 = 666.74nm, λ2 = 667.45nm, and λ3 = 667.87nm mark the spectral points where the intensities at P1 and P2 are either equal (λ2) or one of them reaches its peak value (λ1, λ3). (c-e) Single-frame excerpts from the movie (Media 4) showing the evolution of the electric field intensity (/E/2//E0/2) distribution and the optical power flow through the nanoparticle chain in the y-z plane at x = 0 at λ1, λ2 and λ3, respectively. The arrows point in the direction of the local powerflow, and the length of each arrow is proportional to the local value of the Poynting vector amplitude.
Mentions: The demonstrated ability of optoplasmonic elements to combine efficient nanofocusing of the optical energy with the strategies developed in this article to dynamically mold and re-direct the energy flow on the nanoscale can be used to develop more complex reconfigurable elements and networks. An example of such a reconfigurable optoplasmonic element is shown in Fig. 5 (a)Fig. 5

Bottom Line: We introduce here an alternative approach, which is based on exploiting the strong sub-wavelength spatial phase modulation in the near-field of resonantly-excited high-Q optical microcavities integrated into plasmonic nanocircuits.We show that optical powerflow though nanoscale plasmonic structures can be dynamically molded by engineering interactions of microcavity-induced optical vortices with noble-metal nanoparticles.The proposed strategy of re-configuring plasmonic nanocircuits via locally-addressable photonic elements opens the way to develop chip-integrated optoplasmonic switching architectures, which is crucial for implementation of quantum information nanocircuits.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry & The Photonics Center, Boston University, Boston, MA 02215, USA. sboriskina@gmail.com

No MeSH data available.