Blue Liquid Lasers from Solution of CdZnS/ZnS Ternary Alloy Quantum Dots with Quasi-Continuous Pumping

A blue (ca. 440 nm) liquid laser with an ultra‐low threshold through which quasi‐continuous wave pumping is accessible is achieved by engineering unconventional ternary CdZnS/ZnS alloyed‐core/shell QDs. Such an achievement is enabled by exploiting the novel gain media with minimal defects, suppresse...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2015-01, Vol.27 (1), p.169-175
Main Authors: Wang, Yue, Leck, Kheng Swee, Ta, Van Duong, Chen, Rui, Nalla, Venkatram, Gao, Yuan, He, Tingchao, Demir, Hilmi Volkan, Sun, Handong
Format: Article
Language:English
Subjects:
Accessibility
Auger recombination
Augers
blue lasing
Cross sections
Gain
Liquid lasers
liquid phase
Pumping
Quantum dots
Shells
Zinc sulfides
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Summary:A blue (ca. 440 nm) liquid laser with an ultra‐low threshold through which quasi‐continuous wave pumping is accessible is achieved by engineering unconventional ternary CdZnS/ZnS alloyed‐core/shell QDs. Such an achievement is enabled by exploiting the novel gain media with minimal defects, suppressed Auger recombination, and large gain cross‐section in combination with high‐quality‐factor whispering gallery mode resonators.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201403237