All-inorganic perovskite-based distributed feedback resonator.
Opt Express
; 25(24): A1154-A1161, 2017 Nov 27.
Article
em En
| MEDLINE
| ID: mdl-29220992
ABSTRACT
Halide perovskite materials have rapidly emerged as outstanding optoelectronic materials for solar cells, light-emitting diodes (LEDs), and lasers. Compared to hybrid organic-inorganic perovskites, all-inorganic perovskites have shown unique merits that may contribute to the ultimate goal of developing electrically-pumped lasers. In this paper, we demonstrate a distributed feedback (DFB) resonator using an all-inorganic perovskite thin film as the gain medium. The film has a gain coefficient of 161.1 cm-1 and a loss coefficient of 30.9 cm-1. Excited by picosecond pulses, the microstructured all-inorganic perovskite film exhibits a single-mode emission at 654 nm with a threshold of 33 µJ/cm2. The facile fabrication process provides a promising route towards low-cost single-mode visible lasers for many practical applications.
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MEDLINE
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En
Ano de publicação:
2017
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Article