Experimental demonstration of nanophotonic devices and circuits with colloidal quantum dot waveguides.
OPTICS EXPRESS(2020)
摘要
Colloidal quantum dots (CQDs) have been widely used as absorption or emission materials due to their large-absorption and high-gain properties. However, they are seldom used as low-loss materials in passive nanophotonic devices. Moreover, combinations of two or more properties of CQDs are difficult owing to miscibility of different CQDs. Here, low-loss CQD waveguides are experimentally achieved at wavelengths longer than their fluorescence wavelengths. By using the low-loss and uniform CQD waveguides, various passive nanophotonic devices and a nanophotonic circuit are successfully demonstrated. Furthermore, by employing both of a pattern-assisted stacking and a transfer-printing approach, the miscible problem of different CQDs is addressed, and a low-loss CQD waveguide and a high-gain CQD laser are experimentally integrated on a single chip. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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