Amplified Spontaneous Emission of Rhodamine B-Doped Step-Index Polymer Optical Fibre
LI Zeng-Chang1,2, LIANG Hao2, ZHENG Zhi-Qiang3,4, ZHANG Qi-Jin1,2, MING Hai3
1Structure Research Laboratory, University of Science and Technology of China, Hefei 230026
2Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026
3Department of Physics, University of Science and Technology of China, Hefei 230026
4Department of Physics, Fujian Normal University, Fuzhou 350007
Amplified Spontaneous Emission of Rhodamine B-Doped Step-Index Polymer Optical Fibre
LI Zeng-Chang1,2;LIANG Hao2;ZHENG Zhi-Qiang3,4;ZHANG Qi-Jin1,2;MING Hai3
1Structure Research Laboratory, University of Science and Technology of China, Hefei 230026
2Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026
3Department of Physics, University of Science and Technology of China, Hefei 230026
4Department of Physics, Fujian Normal University, Fuzhou 350007
Abstract： A step-index polymer optical fibre (SI POF) containing rhodamine B in poly (methyl methacrylate) (PMMA) has been fabricated by a perform technique. The rhodamine B content of the doped SI POF is 5ppm-wt. The spectra of the doped SI POF with different fibre lengths were measured. Amplified spontaneous emission (ASE) at 609nm of an SI POF in length 40cm has been observed at ambient temperature by end-pumping with a Nd:YAG laser operated at 532nm. The threshold of absorbed pump power for the onset of ASE is about 0.003mJ.
2005, Vol. 22 
