Frequency upconverted amplified spontaneous emission and lasing from inorganic perovskite under simultaneous six-photon absorption

Decheng Yang, Shenglong Chu, Yunfeng Wang, Chun Kit Siu, Shusheng Pan, Siu Fung Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)2066-2069
Number of pages4
JournalOptics Letters
Issue number9
Publication statusPublished - 1 May 2018

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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