High‐Quality Hexagonal Nonlayered CdS Nanoplatelets for Low‐Threshold Whispering‐Gallery‐Mode Lasing

Small ◽  
2019 ◽  
Vol 15 (35) ◽  
pp. 1901364 ◽  
Author(s):  
Yang Mi ◽  
Bao Jin ◽  
Liyun Zhao ◽  
Jie Chen ◽  
Shuai Zhang ◽  
...  
Keyword(s):  
Whispering Gallery Mode ◽  
High Quality ◽  
Whispering Gallery ◽  
Low Threshold

Solution-processed whispering-gallery-mode microsphere lasers based on colloidal CsPbBr3 perovskite nanocrystals

2021 ◽  
Author(s):  
Minghong Xie ◽  
Wenxiao Gong ◽  
Lei Kong ◽  
Yang Liu ◽  
Yang Mi ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Single Mode ◽  
Whispering Gallery Mode ◽  
Solution Processed ◽  
Time Resolved ◽  
Perovskite Nanocrystals ◽  
Whispering Gallery ◽  
Low Threshold ◽  
The Stability

Abstract Perovskite nanocrystals (NCs) have emerged as attractive gain materials for solution-processed microlasers. Despite the recent surge of reports in this feld, it is still challenging to develop low-cost perovskite NCbased microlasers with high performance. Herein, we demonstrate low-threshold, spectrally tunable lasing from ensembles of CsPbBr3 NCs deposited on silica microspheres. Multiple whispering-gallery-mode lasing is achieved from individual NC/microspheres with a low threshold of ∼3.1 µJ cm−2 and cavity quality factor of ∼1193. Through time-resolved photoluminescence measurements, electron-hole plasma recombination is elucidated as the lasing mechanism. By tuning the microsphere diameter, the desirable single-mode lasing is successfully achieved. Remarkably, the CsPbBr3 NCs display durable room-temperature lasing under ∼107 shots of pulsed laser excitation, substantially exceeding the stability of conventional colloidal NCs. These CsPbBr3 NC-based microlasers can be potentially useful in photonic applications.

Ultralow‐Threshold and High‐Quality Whispering‐Gallery‐Mode Lasing from Colloidal Core/Hybrid‐Shell Quantum Wells

2022 ◽  
pp. 2108884
Author(s):  
Rui Duan ◽  
Zitong Zhang ◽  
Lian Xiao ◽  
Xiaoxu Zhao ◽  
Yi Tian Thung ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Whispering Gallery Mode ◽  
High Quality ◽  
Whispering Gallery

Robust single-mode lasers based on hexagonal CdS microflakes

2020 ◽  
Vol 8 (32) ◽  
pp. 11201-11208
Author(s):  
Yang Mi ◽  
Yaoyao Wu ◽  
Jinchun Shi ◽  
Sheng-Nian Luo
Keyword(s):  
Radiative Recombination ◽  
Single Mode ◽  
Whispering Gallery Mode ◽  
Radiative Recombination Rate ◽  
Electron Hole ◽  
High Quality ◽  
Time Resolved ◽  
Whispering Gallery ◽  
Electron Hole Plasma ◽  
Time Resolved Photoluminescence

We have achieved single-mode whispering-gallery-mode lasing in CdS microflakes with sharp linewidth (∼0.12 nm) and high quality factor (∼4200). Such lasers are superior to previous CdS lasers in these lasing parameters. Through time-resolved photoluminescence measurements, electron–hole plasma recombination is established to be the lasing mechanism. The radiative recombination rate of CdS microflakes is enhanced by a factor of ∼4.7 due to the Purcell effect.

High quality two-photon pumped whispering-gallery-mode lasing from ultrathin CdS microflakes

2019 ◽  
Vol 7 (41) ◽  
pp. 12869-12875 ◽  
Author(s):  
Liyun Zhao ◽  
Qiuyu Shang ◽  
Yan Gao ◽  
Bao Jin ◽  
Tianyou Zhai ◽  
...  
Keyword(s):  
Cadmium Sulfide ◽  
Room Temperature ◽  
Whispering Gallery Mode ◽  
High Quality ◽  
Green Color ◽  
Whispering Gallery ◽  
Two Photon

Room temperature two-photon pumped green-color whispering-gallery-mode lasing from cadmium sulfide microflakes with dimensions below 60 nm.

scholarly journals High-Quality Whispering-Gallery-Mode Lasing from Cesium Lead Halide Perovskite Nanoplatelets

2016 ◽  
Vol 26 (34) ◽  
pp. 6238-6245 ◽  
Author(s):  
Qing Zhang ◽  
Rui Su ◽  
Xinfeng Liu ◽  
Jun Xing ◽  
Tze Chien Sum ◽  
...  
Keyword(s):  
Whispering Gallery Mode ◽  
High Quality ◽  
Whispering Gallery ◽  
Halide Perovskite ◽  
Lead Halide

Ultra-low threshold lasing in silica whispering-gallery-mode microcavities with Nd3+:Gd 2 O 3 nanocrystals

2010 ◽  
Author(s):  
Guoping Lin ◽  
Olivier Tillement ◽  
Yves Candela ◽  
Matteo Martini ◽  
Zhiping Cai ◽  
...  
Keyword(s):  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Low Threshold
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