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

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.

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

scholarly journals Low-threshold stimulated Brillouin scattering in high-Q whispering gallery mode tellurite microspheres

2015 ◽  
Vol 23 (25) ◽  
pp. 32261 ◽  
Author(s):  
Changlei Guo ◽  
Kaijun Che ◽  
Pan Zhang ◽  
Jinshu Wu ◽  
Yantang Huang ◽  
...  
Keyword(s):  
Brillouin Scattering ◽  
Stimulated Brillouin Scattering ◽  
Whispering Gallery Mode ◽  
High Q ◽  
Whispering Gallery ◽  
Low Threshold ◽  
Stimulated Brillouin

Femtosecond laser direct writing of perovskite patterns with whispering gallery mode lasing

2020 ◽  
Vol 8 (22) ◽  
pp. 7314-7321
Author(s):  
Xiaoyu Tian ◽  
Yalun Xu ◽  
Hongming Zhao ◽  
Xiubo Qin ◽  
Yangtian Nie ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Whispering Gallery Mode ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Whispering Gallery ◽  
Low Threshold

Whispering gallery mode microlasers based on evaporated perovskite films were fabricated by femtosecond laser direct writing with ultra-low threshold.

Stable and low-threshold whispering-gallery-mode lasing from modified CsPbBr3 perovskite quantum dots@SiO2 sphere

2020 ◽  
Vol 401 ◽  
pp. 126066 ◽  
Author(s):  
Dongdong Yan ◽  
Tongchao Shi ◽  
Zhigang Zang ◽  
Shuangyi Zhao ◽  
Juan Du ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Perovskite Quantum Dots ◽  
Low Threshold
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