Optical Trapping and Two-Photon Excitation of Colloidal Quantum Dots Using Bowtie Apertures
| Autor: | Russell A. Jensen, Thomas S. Bischof, Jennifer T. Choy, Moungi G. Bawendi, I-Chun Huang, Marko Loncar, Ou Chen |
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| Rok vydání: | 2016 |
| Předmět: |
02 engineering and technology
Trapping 01 natural sciences law.invention 010309 optics Optics Two-photon excitation microscopy law 0103 physical sciences Physics::Atomic Physics Electrical and Electronic Engineering Plasmon Condensed Matter::Quantum Gases Physics business.industry 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optical tweezers Quantum dot Optoelectronics Continuous wave 0210 nano-technology business Excitation Biotechnology |
| Zdroj: | ACS Photonics. 3:423-427 |
| ISSN: | 2330-4022 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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