Optical Trapping and Two-Photon Excitation of Colloidal Quantum Dots Using Bowtie Apertures

Optical Trapping and Two-Photon Excitation of Colloidal Quantum Dots Using Bowtie Apertures

We demonstrate bowtie apertures that were designed and fabricated by a lift-off process to optically trap individual, 30 nm, silica-coated quantum dots (scQD). Simulations and experiments confirm the trapping capability of the system with a relatively low continuous wave trapping flux of 1.56 MW/cm2...

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Veröffentlicht in:ACS photonics 2016-03, Vol.3 (3), p.423-427
Hauptverfasser: Jensen, Russell A, Huang, I-Chun, Chen, Ou, Choy, Jennifer T, Bischof, Thomas S, Lončar, Marko, Bawendi, Moungi G
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solar (photovoltaic), solid state lighting, photosynthesis (natural and artificial), charge transport, optics, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing)
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container_issue 3
container_start_page 423
container_title ACS photonics
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creator Jensen, Russell A
Huang, I-Chun
Chen, Ou
Choy, Jennifer T
Bischof, Thomas S
Lončar, Marko
Bawendi, Moungi G
description We demonstrate bowtie apertures that were designed and fabricated by a lift-off process to optically trap individual, 30 nm, silica-coated quantum dots (scQD). Simulations and experiments confirm the trapping capability of the system with a relatively low continuous wave trapping flux of 1.56 MW/cm2 at 1064 nm. Additionally, the scQD emits upon trapping via two-photon excitation from the trapping laser due to strong field enhancement inside the aperture. This system is an exciting platform for studying light–matter interactions and mulitphoton processes in single emitters.
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title Optical Trapping and Two-Photon Excitation of Colloidal Quantum Dots Using Bowtie Apertures
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