Emission coupling in hybrid photonic-plasmonic devices with single nanoscale light sources

Datum

09.06.2017

Zeit

13:00 - 14:00

Sprecher

Esteban Bermudez

Zugehörigkeit

The Institute of Photonic Sciences (ICFO), Barcelona, Spain

Sprache

en

Hauptthema

Materialien

Andere Themen

Materialien, Physik

Host

Kristina Krummer

Beschreibung

The field of photonics comprehends the generation, manipulation and detection of light (photons). Over the past decades, it has underpinned many of the technological advances upon which we rely on a daily basis, from our personal electronic devices and data communication channels (fibre optics), to medical instruments and lighting technologies. Advances made in this field depend greatly on the understanding and control we have over the light-matter interactions at play, with a strong focus on integrated photonic chip platforms due to their small footprint and scalability potential. One of the main challenges to achieve fully integrated photonic chips deals with the emission coupling from nanoscale light sources to the on-chip photonic components. Ideally, the energy of a given light emitter should efficiently couple to sub-wavelength confined modes in order to fulfil scalability requirements. One solution is to implement metallic structures supporting surface plasmon polariton modes (i.e., coupled oscillations between photons and the free-electrons of the metal), which enable confinements beyond the diffraction limit of light and provide the enhancement of the emission dynamics. In this talk, I will present a variety of hybrid photonic-plasmonic devices operating with down to a single nanoscale light source. One of our focus was the integration of single quantum emitters, promising for quantum information technologies, together with the plasmonic architectures, including colloidal quantum dots coupled to plasmonic nanoantennas, and nitrogen vacancy centers in nanodiamonds and self-assembled quantum dots in semiconductor nanowires coupled to the channel plasmon polariton modes supported by V-groove (VG) plasmonic waveguides. Finally I will present our recent demonstration of a plasmonic waveguide-integrated nanowire laser device, where we have placed single GaAs based semiconductor nanowires at the bottom of VG plasmonic waveguide channels. We achieve lasing action from a hybrid photonic-plasmonic mode supported by the NW-VG configuration, and observe transfer of the lasing emission into the sub-wavelength confined modes supported by the VGs.

Links

• Seminars at the IFW

Letztmalig verändert: 09.06.2017, 09:38:12