Random laser action from ceramic-doped polymer films. Issue 13 (20th July 2017)

• Record Type: Journal Article
• Authors: Xiao, Shuhao; Li, Tingshuai; Huang, Dengfeng; Xu, Min; Hu, Huiping; Liu, Shenye; Wang, Chuanke; Yi, Tao
• Is Part Of: Journal of modern optics. Volume 64:Issue 13(2017)
• Page Start: 1289
• Page End: 1297
• Publication Date: 2017-07-20
• Subjects: Random lasing -- film -- ceramic particle -- threshold -- scattering; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2017.1285065
• Languages: English
• ISSNs: 0950-0340

Abstract

Abstract: We report random lasing emission from polymer films doped with ceramic particles in a gain medium. The Al2 O3 particles and Rh6G laser dye-doped PVP films were fabricated by a spin-coating technique and they were exposed to a pulsed laser at 526 nm, by which we collected intensive feedback random laser (IFRL) emission when the pump energy reached thresholds. The threshold depended on particle size, film thickness and particle contents in solution. A model with randomly distributed scatterers was established to confirm that the scattering properties could strongly effect the thresholds and lasing spatial distributions.