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Blue Liquid Lasers from Solution of CdZnS/ZnS Ternary Alloy Quantum Dots with Quasi‐Continuous Pumping
Author(s) -
Wang Yue,
Leck Kheng Swee,
Ta Van Duong,
Chen Rui,
Nalla Venkatram,
Gao Yuan,
He Tingchao,
Demir Hilmi Volkan,
Sun Handong
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201403237
Subject(s) - materials science , ternary operation , laser , auger effect , optoelectronics , quantum dot , whispering gallery wave , alloy , resonator , auger , optics , composite material , physics , atomic physics , computer science , programming language
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.