Light amplification due to two-beam coupling is realized in doped polymethyl methacrylate （PMMA） glasses. A coupling gain as large as 14 cm^-1 is obtained. The dynamic behaviour of absorption and light-induced scatt...Light amplification due to two-beam coupling is realized in doped polymethyl methacrylate （PMMA） glasses. A coupling gain as large as 14 cm^-1 is obtained. The dynamic behaviour of absorption and light-induced scattering due to the process of photopolymerization are also studied. The results show that the amplification and its dynamic process enable possible applications of PMMA in optical devices.展开更多
基金Supported by the Ministry of Education of China under Grant Nos 105048 and 704012, the National Natural Science Foundation of China under Grant Nos 10604033 and 10334010, the Cultivation Fund of the Key Scientific and Technical Innovation Project, the Key International S＆T Cooperation Project （2005DFA10170）, the Programme for Changjiang Scholars and Innovative Research Team in University （PCSIRT）, the National Basic Research Programme of China under Grant No 2007CB307002）, the 111 Project the Ministry of Education of China under Grant No B07013, and the Scientific-Technical Cooperation Project of （DAD （VII-B-7）.
文摘Light amplification due to two-beam coupling is realized in doped polymethyl methacrylate （PMMA） glasses. A coupling gain as large as 14 cm^-1 is obtained. The dynamic behaviour of absorption and light-induced scattering due to the process of photopolymerization are also studied. The results show that the amplification and its dynamic process enable possible applications of PMMA in optical devices.
