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Multi-Band Up-Converted Lasing Behavior in NaYF₄:Yb/Er Nanocrystals
Ya-Pei Peng1, Wei Lu2, Pengpeng Ren3
1Shenzhen Key Laboratory of Laser Engineering, Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, College of Optoelectronic Engineering,, Shenzhen University, Shenzhen 518060, China. yypeng@szu.edu.cn.
Nanomaterials (Basel, Switzerland)
|July 7, 2018
Summary
Researchers demonstrated multi-band up-converted random lasing from sodium yttrium fluoride (NaYF₄) nanocrystals. This breakthrough in random laser technology utilizes ytterbium (Yb) and erbium (Er) co-doped nanocrystals for potential bioimaging applications.
Area of Science:
- Photonics and Nanomaterials Science.
- Exploration of advanced optical materials and their applications.
Background:
- Random lasers are of significant interest due to their potential applications.
- Up-conversion luminescence in rare-earth-doped materials is a key phenomenon.
Purpose of the Study:
- To investigate multi-band up-converted random lasing from NaYF₄:Yb,Er nanocrystals (NCs).
- To explore the potential of these NCs in planar microcavities for lasing applications.
Main Methods:
- Utilized continuous wave and pulsed 980 nm laser excitation.
- Employed a planar microcavity approach with NaYF₄:Yb,Er NCs.
- Analyzed up-converted lasing emission spectra.
Main Results:
- NaYF₄:Yb,Er NCs exhibited high effective up-conversion luminescence.
- Achieved multi-band up-converted random lasing emission.
- Observed lasing emission linewidths of 0.2 nm at 540 nm and 0.4 nm at 660 nm.
Conclusions:
- Successfully demonstrated multi-band up-converted random lasing in NaYF₄:Yb,Er NCs.
- The findings suggest potential applications in bioimaging and biomedical fields.
- This research advances the development of novel random laser sources.
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