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Fabrication of cadmium selenide quantum dots with laser ablation in superfluid helium
Author(s): Yosuke Minowa; Tatsuro Suzuki; Kenji Setoura; Syoji Ito; Hiroshi Miyasaka; Masaaki Ashida
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Paper Abstract

We fabricated semiconductor cadmium selenide (CdSe) quantum dots via the pulsed laser ablation in the superfluid helium. The fabricated quantum dots showed blue-shifted fluorescence due to the strong quantum confinement effect. The fluorescence blinking phenomena were also observed indicating the single photon emission process. Our proposed scheme is a simple, robust, and reliable method to fabricate quantum dots and to introduce the highly fluorescence nanoparticles into superfluid helium appropriate for resonant optical manipulation and nano-tracers for liquid helium visualization.

Paper Details

Date Published: 24 April 2018
PDF: 2 pages
Proc. SPIE 10712, Optical Manipulation Conference, 107120N (24 April 2018); doi: 10.1117/12.2319016
Show Author Affiliations
Yosuke Minowa, Osaka Univ. (Japan)
Tatsuro Suzuki, Osaka Univ. (Japan)
Kenji Setoura, Osaka Univ. (Japan)
Syoji Ito, Osaka Univ. (Japan)
Hiroshi Miyasaka, Osaka Univ. (Japan)
Masaaki Ashida, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 10712:
Optical Manipulation Conference
Takashige Omatsu; Hajime Ishihara; Keiji Sasaki, Editor(s)

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