Nano-Ag:polymeric composite material for ultrafast photonic crystal all-optical switching

作者：Hu Xiaoyong; Jiang Ping; Xin Cheng; Yang Hong; Gong Qihuang^*

来源：Applied Physics Letters, 2009, 94(3): 031103.

DOI：10.1063/1.3073712

• conducting polymers
• doping profiles
• filled polymers
• high-speed optical techniques
• nanocomposites
• nanoparticles
• nonlinear optical susceptibility
• organic semiconductors
• photonic crystals
• semiconductor doping
• silver

We report a nanocomposite material possessing large nonlinear optical coefficients and fast response simultaneously, which is made of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] doped with Ag nanoparticles. Under resonant excitation of the polymer matrix and Ag nanoparticles, the value of the nonlinear susceptibility reaches the order of 10(-6) esu. A nonlinear response time of 35 ps is achieved due to the energy transfer from organic molecules to Ag nanoparticles. An ultrafast photonic crystal all-optical switching with an ultralow pump intensity of 0.2 MW/cm(2) is realized.

• 出版日期2009-1-19
• 单位北京大学