Random lasing emission form granular-surface PS/PMMA blend films
The random lasing emission from granular-surface PS∶PMMA∶Alq3∶DCJTB blend films was investigated.By micro-phase separation of PS∶PMMA∶Alq3∶DCJTB blend in spin-coating and solvent evaporation process,we obtained a granular-surface waveguide film with gain on glass substrates,whose period is about 200~500nm,and fluctuation is about 20nm.Pumped by THG YAG laser,a significant random laser emission was observed.Compared with the samples of glass/PMMA∶Alq3∶DCJTB and glass/PS∶Alq3∶DCJTB prepared under the same conditions,the laser threshold decreased about 5 times,the line width at half (FWHM) reduced to 1.7nm from more than ten nm,and the quality factor of laser peak increased 7-9 times.
Polymer blend micro-phase separation AFM random laser
Xuanke Zhao
Dept.of Physics,Xian Research Inst.of Hi-Tech Hongqing Town,Xian,P.R.China
国际会议
沈阳
英文
110-114
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）