Low threshold lasing of bubble-containing glass microspheres by non-whispering gallery mode excitation over a wide wavelength range

2015 ◽  
Vol 117 (11) ◽  
pp. 113104 ◽  
Author(s):  
Tsutaru Kumagai ◽  
Tetsuo Kishi ◽  
Tetsuji Yano
Keyword(s):  
Wavelength Range ◽  
Whispering Gallery Mode ◽  
Glass Microspheres ◽  
Whispering Gallery ◽  
Wide Wavelength Range ◽  
Mode Excitation ◽  
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

Acoustooptic-Mode-Coupling-Based Whispering Gallery Mode Excitation in Silica-Capillary Microresonator

2017 ◽  
Vol 35 (2) ◽  
pp. 220-224 ◽  
Author(s):  
Jixuan Wu ◽  
Hao Zhang ◽  
Bo Liu ◽  
Binbin Song ◽  
Yuetao Li ◽  
...  
Keyword(s):  
Mode Coupling ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Mode Excitation ◽  
Silica Capillary
Sign in / Sign up

Export Citation Format

Share Document