材料科学
光学
分散性
球体
质量(理念)
多孔性
激光器
光电子学
物理
复合材料
量子力学
天文
高分子化学
作者
Nhat Van Pham,Quan Hai Nguyen,Toan-Van Nguyen,Tien Anh Nguyen,Van Duong Ta
出处
期刊:Optics Letters
[The Optical Society]
日期:2024-09-30
卷期号:49 (21): 6165-6165
摘要
Miniature random lasers with high quality factor are crucial for applications in barcoding, bioimaging, and on-chip technologies. However, achieving monodisperse and size-tunable biocompatible random lasers has been a significant challenge. In this study, we employed poly(lactic-co-glycolic) acid (PLGA), a biocompatible material approved for medical use, as the base material for random lasers. By integrating a dye-doped PLGA solution with a microfluidic system, we successfully fabricated monodisperse and miniature dye-doped PLGA spheres with tunable sizes ranging from 25 to 52 µm. Upon optical pulse excitation, these spheres exhibited strong random lasing emission at 610-640 nm with a threshold of approximately 22 µJ·mm
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