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Proceedings Paper

Single-mode light source fabrication based on colloidal quantum dots
Author(s): Jianfeng Xu; Bing Chen; Sarfaraz Baig; Michael R. Wang
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Paper Abstract

There are huge market demands for innovative, cheap and efficient light sources, including light emitting devices, such as LEDs and lasers. However, the light source development in the visible spectral range encounters significant difficulties these years. The available visible wavelength LEDs or lasers are few, large and expensive. The main challenge lies at the lack of efficient light media. Semiconductor nanocrystal quantum dots (QDs) have recently commanded considerable attention. As a result of quantum confinement effect, the emission color of these QDs covers the whole visible spectral range and can be modified dramatically by simply changing their size. Such spectral tunability, together with large photoluminescence quantum yield and photostability, make QDs attractive for potential applications in a variety of light emitting technologies. However, there are still several technical problems that hinder their application as light sources. One main issue is how to fabricate these QDs into a solid state device while still retaining their original optical emission properties. A vacuum assisted micro-fluidic fabrication of guided wave devices has demonstrated low waveguide propagation loss, lower crosstalk, and improved waveguide structures. We report herein the combination of the excellent emission properties of QDs and novel vacuum assisted micro-fluidic photonic structure fabrication technique to realize single-mode efficient light sources.

Paper Details

Date Published: 18 February 2009
PDF: 7 pages
Proc. SPIE 7224, Quantum Dots, Particles, and Nanoclusters VI, 722415 (18 February 2009); doi: 10.1117/12.810536
Show Author Affiliations
Jianfeng Xu, New Span Opto-Technology Inc. (United States)
Bing Chen, Univ. of Miami (United States)
Sarfaraz Baig, Univ. of Miami (United States)
Michael R. Wang, Univ. of Miami (United States)

Published in SPIE Proceedings Vol. 7224:
Quantum Dots, Particles, and Nanoclusters VI
Kurt G. Eyink; Frank Szmulowicz; Diana L. Huffaker, Editor(s)

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