White-Light Whispering-Gallery-Mode Lasing from Lanthanide-Doped Upconversion NaYF4 Hexagonal Microrods
Source abstract
Abstract
We demonstrate simultaneous red, green, and blue emission from a Yb 3+ –Er 3+ –Tm 3+ tridoped hexagonal β-NaYF 4 microrod, which supports whispering-gallery-mode (WGM) resonance, to realize white-light lasing under near-infrared excitation at room temperature. This can be done by optimizing the upconversion efficiency and emission intensity balance of the blue, green, and red peaks through the proper tuning of sensitizer (Yb 3+ ) and activator (Er 3+, Tm 3+ ) concentration in the host matrix. In addition, we minimize the difference of lasing threshold and maintain stable single-mode operation to achieve simultaneous red, green, and blue lasing by optimizing the radius of the hexagonal microrods.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Solid State Laser Technologies · Advanced Fiber Laser Technologies · Random lasers and scattering media
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
College of Materials Science, Engineering, Kunming University of Science, Technology, Kuming, Yunnan, China
Funding
Research Grants Council, University Grants Committee · National Natural Science Foundation of China
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