Plasmonics/Metamaterials

Manipulating photon−plasmon coupling in microtube cavities

Manipulating photon−plasmon coupling in microtube cavities

In situ generation of silver nanoparticles for selective coupling between localized plasmonic resonances and whispering-gallery modes is demonstrated by spatially resolved laser dewetting on microtube surfaces. Our work provides a convenient way to manipulate photon-plasmon coupling in three-dimensional micro-cavities, which is of interest for optical tuning abilities and control of enhanced light-matter interaction.

Y. Yin et al., ACS Nano 12, 3726 (2018) URL PDF

 

 

Selective plasmon-photon coupling in tubular microcavities

Selective plasmon-photon coupling in tubular microcavities 

A plasmonic nanogap is designed in three-dimensionally confined microtubular cavities to demonstrate efficient coupling of localized surface plasmons (LSPs) and resonant light. Selective coupling of LSPs and resonant modes is achieved, exhibiting spatial dependence of the plasmonic nanogap on the microcavities. Our work reveals the interaction of surface plasmon resonances localized at the nanoscale with optical resonances confined at the microscale, thus establishing a unique platform for the investigation of light-matter interactions.

Y. Yin et al., Phys. Rev. Lett. 116, 253904 (2016) URL PDF 

Metamaterial fiber optics

Metamaterial fiber optics

A metamaterial integration for fiber optics, leading to a dual effect of surface plasmon and classical waveguiding, is presented along with experimental potentiality. We theoretically propose a metamaterial fiber in which, depending on the wavelength (from ultraviolet to infrared) and the particular metamaterial composition, one can transmit information through surface plasmon mediated or classical waveguidance. The metamaterial can be used as the core or cladding of a fiber which allows waveguidance through a subwavelength geometry.

E. J. Smith et al., Nano Lett. 10, 1, 1-5 (2010) URL PDF

This work was highlighted in:

  • Nature Photonics 3, 310 (2009) URL PDF
  • www.technologyreview.com (April 17, 2009) URL
Rolled-up hyperlens

Rolled-up hyperlens

An investigation of the material makeup and surrounding medium of an optical rolled-up hyperlens is presented. A working spectral range of the hyperlens for different material combinations is studied along with an examination of hyperlens immersion, which suppresses the diffraction of waves exiting the lens due to impedance matching, leading to a higher intensity output. This hyperlens immersion technique can be implemented into cell culture and molecular analysis.

E. J. Smith et al., Applied Physics Letters 95, 083104 (2009) URL PDF
E. J. Smith et al., Applied Physics Letters 96, 019902 (2010) URL PDF

Professor Oliver G. Schmidt

Director:

Prof. Dr. Oliver G. Schmidt
IFW Dresden
Helmholtzstr. 20
D-01069 Dresden

Contact: 

Office
Kristina Krummer
office-iin (at) ifw-dresden.de
Phone:+49 351 4659 810
Fax:+49 351 4659 782