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Microstructure on Surface of LiNbO3:Fe Induced by a Single Ultra—Short Laser Pulse
引用本文:程光华,刘青,王屹山,赵卫,陈国夫.Microstructure on Surface of LiNbO3:Fe Induced by a Single Ultra—Short Laser Pulse[J].中国物理快报,2003,20(8):1283-1285.
作者姓名:程光华  刘青  王屹山  赵卫  陈国夫
作者单位:StateKeyLaboratoryofTransientOpticsandTechnology,Xi‘anInstituteofOpticsandPrecisionMechanics,ChineseAcademyofSciences,Xi’an710068
摘    要:A tightly focused femtosecond Ti:sapphire laser pulse is used to initiate micro-explosions on the surface and internal to an Fe:LiNb03 crystal. The resulting structure is morphologically different from that induced in an isotropic sample such as fused silica. The regular pyramid and irregular pyramid craters on the surface of the sample are produced at different positions of focal points. The craters suggest vaporization of materials in the process of micro-explosion due to the expansion of high temperature plasma. The embossment pyramids on the surface present the dynamical process of large volume material displacements under high temperature and pressure, and recrystallization of anisotropy crystal materials.

关 键 词:LiNbO3:Fe  铌酸锂晶体  铁掺杂  超短激光脉冲  显微结构  能带隙结构  各向异性  晶体动力学
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