Journal
NANOMATERIALS
Volume 8, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/nano8070497
Keywords
random laser; nanomaterials; up-conversion
Categories
Funding
- National Nature Science Foundation of China [51502176]
- Science and Technology Projects of Shenzhen [JCYJ20170818101651195, JCYJ20150324141711618, JCYJ20160427105041864, JSGG20160429114438287]
- Natural Science Foundation of SZU [827-000130]
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Random lasers have attracted great interests and extensively investigation owing to their promising applications. Here, we explored unambiguously the multi-band up-converted random lasing from NaYF4:Yb, Er nanocrystals (NCs). NaYF4:Yb, Er NCs exhibit high effective up-conversion luminescence when they are excited by continuous wave 980 nm laser. We investigated a planar microcavities approach wherein the NaYF4:Yb, Er NCs showed up-converted lasing behavior. The optical pumping of NaYF4:Yb, Er NCs by 980 nm pulsed laser excitation exhibited multi-band lasing. The NaYF4:Yb, Er NCs showed multi-band lasing emission with a line width of 0.2 nm at 540 nm and 0.4 nm at 660 nm. This research promotes potential application in bioimaging and biomedical fields.
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