Journal
NANO ENERGY
Volume 68, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2019.104334
Keywords
Hybrid perovskite; Monocrystalline film; Single-mode microlaser; Vertical-cavity surface-emitting laser; Integrated optoelectronic device
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Funding
- National Natural Science Foundation of China [11804109, 11204097, 11674117]
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Single-mode microlasers are of crucial importance for high-performance integrated photonic devices. However, it still remains a significant challenge to achieve single-mode microlasers conveniently. In this work, we propose a strategy to realize high-quality, single-mode vertical-cavity surface-emitting lasers (VCSELs) based on hybrid perovskite monocrystalline films. Under two-photon pump, the VCSEL exhibits excellent performances with a remarkable low threshold of similar to 421 mu J/cm(2), a high quality factor (Q factor) of similar to 1286 and a small divergence angle of similar to 0.5 degrees. Importantly, single-mode lasing with a good spatial coherence can be conveniently achieved with the VCSEL configuration, which significantly reduces the complexity for fabricating high-quality single-mode microlasers. In addition, switchable VCSEL can be realized by taking advantage of the anisotropic two-photon absorption of the hybrid perovskites. The single-mode vertical-cavity emission, excellent lasing performances, frequency up-conversion ability and switchable property will provide a versatile platform for high-performance nanosources and multifunctional integrated optoelectronic devices.
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