SEMINAR 
Key Laboratory of Transparent Opto-functional Inorganic Materials 
中国科学院透明光功能无机材料重点实验室 

　　Self–transformation of femtosecond light pulses in selected oxide crystals 

　　Speaker 

　　Dr. Bogusław Macalik 

　　Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland 

　　时间：2015年5月25日 上午10:00 

　　地点：中试基地5号楼4楼会议室 

　　联系人：苏良碧研究员（69987734） 

　　报告摘要： 

　　The wide range Stokes and anti-Stokes emission after femtosecond excitation of oxides crystals was observed. The recorded spectral widths are 1050, 970, 730 570 nm and for Gd₂SiO₅, Gd₂Ga₅O₁₂, LuVO₄ and LiTaO₃ crystal, respectively. The emission was generated despite the fact that band gap for LTO and LVO crystals are smaller than the triple photon energy of 800 nm incident light beam. It was observed that changes of minimal power for supercontinuum generation and its spectral width follow the changes of threshold power for SF process. 

　　报告人简介： 

　　Dr. Bogusław Macalik is a senior staff of Dept. of Spectroscopy of Laser Materials, from Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland. And he is also Director's Proxy for Technical Affairs.