26 May 2016 Random lasing actions in self-assembled perovskite nanoparticles
Author Affiliations +
Solution-based perovskite nanoparticles have been intensively studied in the past few years due to their applications in both photovoltaic and optoelectronic devices. Here, based on the common ground between solution-based perovskite and random lasers, we have studied the mirrorless lasing actions in self-assembled perovskite nanoparticles. After synthesis from a solution, discrete lasing peaks have been observed from optically pumped perovskites without any well-defined cavity boundaries. We have demonstrated that the origin of the random lasing emissions is the scattering between the nanostructures in the perovskite microplates. The obtained quality (Q) factors and thresholds of random lasers are around 500 and 60  μJ/cm2, respectively. Both values are comparable to the conventional perovskite microdisk lasers with polygon-shaped cavity boundaries. From the corresponding studies on laser spectra and fluorescence microscope images, the lasing actions are considered random lasers that are generated by strong multiple scattering in random gain media. In additional to conventional single-photon excitation, due to the strong nonlinear effects of perovskites, two-photon pumped random lasers have also been demonstrated for the first time. We believe this research will find its potential applications in low-cost coherent light sources and biomedical detection.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Shuai Liu, Shuai Liu, Wenzhao Sun, Wenzhao Sun, Jiankai Li, Jiankai Li, Zhiyuan Gu, Zhiyuan Gu, Kaiyang Wang, Kaiyang Wang, Shumin Xiao, Shumin Xiao, Qinghai Song, Qinghai Song, } "Random lasing actions in self-assembled perovskite nanoparticles," Optical Engineering 55(5), 057102 (26 May 2016). https://doi.org/10.1117/1.OE.55.5.057102 . Submission:


Lasing effect in blue phase liquid crystal
Proceedings of SPIE (September 11 2013)
Structural Raman enhancement in graphite nano-discs
Proceedings of SPIE (April 17 2016)
Core-shell (TiO2@Silica) nanoparticles for random lasers
Proceedings of SPIE (February 21 2018)
Random lasers ensnared
Proceedings of SPIE (April 25 2012)
Lasing in disordered media
Proceedings of SPIE (July 02 2003)

Back to Top