whispering gallery mode
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2022 ◽  
Author(s):  
Lidan Jiang ◽  
leilei shi ◽  
Dongmei HUANG ◽  
Jing Luo ◽  
Qirui Gao ◽  
...  

2022 ◽  
pp. 2108884
Author(s):  
Rui Duan ◽  
Zitong Zhang ◽  
Lian Xiao ◽  
Xiaoxu Zhao ◽  
Yi Tian Thung ◽  
...  

2022 ◽  
Vol 17 (1) ◽  
Author(s):  
Guo-Hui Li ◽  
Bo-Lin Zhou ◽  
Zhen Hou ◽  
Yan-Fu Wei ◽  
Rong Wen ◽  
...  

AbstractThe outstanding optoelectrical properties and high-quality factor of whispering gallery mode perovskite nanocavities make it attractive for applications in small lasers. However, efforts to make lasers with better performance have been hampered by the lack of efficient methods for the synthesis and transfer of perovskite nanocavities on desired substrate at quality required for applications. Here, we report transfer printing of perovskite nanocavities grown by chemical vapor deposition from mica substrate onto SiO2 substrate. Transferred perovskite nanocavity has an RMS roughness of ~ 1.2 nm and no thermal degradation in thermal release process. We further use femtosecond laser to excite a transferred perovskite nanocavity and measures its quality factor as high as 2580 and a lasing threshold of 27.89 μJ/cm2 which is almost unchanged as compared with pristine perovskite nanocavities. This method represents a significant step toward the realization of perovskite nanolasers with smaller sizes and better heat management as well as application in optoelectronic devices.


2021 ◽  
Vol 16 (6) ◽  
Author(s):  
Ramzil R. Galiev ◽  
Nikita M. Kondratiev ◽  
Valery E. Lobanov ◽  
Andrey B. Matsko ◽  
Igor A. Bilenko

2021 ◽  
Author(s):  
Minghong Xie ◽  
Wenxiao Gong ◽  
Lei Kong ◽  
Yang Liu ◽  
Yang Mi ◽  
...  

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.


2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Deshui Yu ◽  
Matjaž Humar ◽  
Krista Meserve ◽  
Ryan C. Bailey ◽  
Síle Nic Chormaic ◽  
...  

2021 ◽  
Author(s):  
Guo Yu ◽  
Junchao Li ◽  
Hua Zong ◽  
Menglai Lei ◽  
Huanqing Chen ◽  
...  

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