Peng Ya-Pei, Lu Wei, Ren Pengpeng, Ni Yiquan, Wang Yunfeng, Yan Peiguang, Zeng Yu-Jia, Zhang Wenfei, Ruan Shuangchen
Shenzhen 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.
University Research Facility in Materials Characterization and Device Fabrication, The Hong Kong Polytechnic University, Hong Kong 999077, China.
Nanomaterials (Basel). 2018 Jul 5;8(7):497. doi: 10.3390/nano8070497.
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.
由于具有广阔的应用前景，随机激光器引起了人们极大的兴趣并得到了广泛的研究。在此，我们明确地探索了NaYF₄:Yb,Er纳米晶体（NCs）的多波段上转换随机激光发射。当NaYF₄:Yb,Er NCs被连续波980nm激光激发时，它们表现出高效的上转换发光。我们研究了一种平面微腔方法，其中NaYF₄:Yb,Er NCs呈现出上转换激光发射行为。用980nm脉冲激光激发对NaYF₄:Yb,Er NCs进行光泵浦时表现出多波段激光发射。NaYF₄:Yb,Er NCs在540nm处呈现出线宽为0.2nm、在660nm处线宽为0.4nm的多波段激光发射。这项研究推动了其在生物成像和生物医学领域的潜在应用。
