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Title: Frequency upconverted amplified spontaneous emission and lasing from inorganic perovskite under simultaneous six-photon absorption
Authors: Yang, D 
Chu, S
Wang, Y 
Siu, CK 
Pan, S
Yu, SF 
Issue Date: 2018
Publisher: Optical Society of America
Source: Optics letters, 2018, v. 43, no. 9, p. 2066-2069 How to cite?
Journal: Optics letters 
Abstract: Multiphoton pumped stimulated emission requires simultaneous absorption of photons for the creation of population inversion to sustain optical amplification. Recently, stimulated emission by simultaneous absorption of up to five photons has been realized. To achieve more diverse nonlinear optical applications, it is desired to have more photons involved in the upconversion process. Here, we demonstrate unambiguously frequency upconverted amplified spontaneous emission and lasing via simultaneous six-photon absorption from inorganic perovskite. Our finding allows the utilization of inorganic perovskite as the novel alternative for higher-order multiphoton fluorescent applications.
ISSN: 0146-9592
EISSN: 1539-4794
DOI: 10.1364/OL.43.002066
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