Magnetically Controllable Random Lasers. Issue 12 (10th October 2017)

• Record Type: Journal Article
• Authors: Tsai, Cheng‐Yen; Liao, Yu‐Ming; Liao, Wei‐Cheng; Lin, Wei‐Ju; Perumal, Packiyaraj; Hu, Hsiu‐Hao; Lin, Shih‐Yao; Chang, Cheng‐Han; Cai, Shu‐Yi; Sun, Tzu‐Min; Lin, Hung‐I; Haider, Golam; Chen, Yang‐Fang
• Is Part Of: Advanced materials technologies. Volume 2:Issue 12(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-10-10
• Subjects: controllability -- magnetic nanoparticles -- magneto‐optics -- random lasers -- switchability; Materials science -- Periodicals; Technological innovations -- Periodicals; Materials science; Technological innovations; Periodicals; 620.1105
• DOI: 10.1002/admt.201700170
• Languages: English
• ISSNs: 2365-709X

Abstract

Abstract: Toward practical applications of random lasers, controllability is a key factor. Here, magnetically controllable random lasers (MCRLs) are designed, fabricated, and demonstrated. Under a prescribed magnetic field, the MCRLs composed of stilbene 420 laser dye, TiO2 nanoparticles, and Fe3 O4 nanoparticles possess magnetic controllability and switchability with good responsivity and durability. The applied magnetic field can be used to manipulate the distribution of Fe3 O4 nanoparticles, which in turn alters the formation of the coherent loops and the properties of laser action. The MCRLs developed here can serve as magneto‐optics prototypes for several potential applications, such as biomedicine and optical communications. Abstract : The first attempt of magnetically controllable random lasers (MCRLs) is demonstrated. The mode controllability and switchability of the MCRLs are studied systematically. It is foreseen that this work can serve as advanced magneto‐optics modules for practical uses, including magnetic remote control and magneto‐optics sensors. Moreover, the MCRLs made with biocompatible materials may bring new opportunities for localized bioimaging and medical diagnostics.