光学材料

• Magnetorheological finishing ( mrf ) is a newly developed optical machining method , which can achieve fine - finished optical apparatus efficiently . combining with electro - magnetics , hydrodynamics and chemistry , mrf has been applied in optical machining . plane surface , sphere and asphere made of different optical materials can be machined
  它将电磁学、流变学、化学综合作用于光学加工中,可以实现对光学器件的高效精密抛光,是获得超光滑光学表面的理想工艺之一,目前已经被应用于对平面、球面、非球面的超精密加工,可加工材料范围涵盖了光学玻璃、微晶玻璃、光学晶体等多数光学材料。
• Applications of room temperature ionic liquids as a classification of green solvents and a catalyst system in the fields such as separation process , chemical reaction . electrolysis chemistry are introduced ; meanwhile ionic liquids can also he used as lubricating materials , sensitive materials , energy - storage materials and optical materials
  摘要介绍了室温离子液体作为一类绿色溶剂和催化剂体系在分离过程、化学反应、电化学等领域的应用情况；同时离子液体还可以作为润滑材料、敏感材料、储能材料和光学材料。
• The research history of fullerene and cnts was short , but their characteristics have great value in practical application . metallic nano - particles have different crystal orientation with different synthetical techniques . their special mechanical , optical and electrical properties will drive the development of magnetic materials , electronic materials and optical materials et . al
  纳米金属粒子在不同的制备工艺下具有不同的结晶形态，而且其具有的特殊的力、热、光、电、磁的性质，引起了在磁性材料、电子材料、光学材料、高致密度材料等方面的应用。
• Nowadays , low - dimension nano - structured materials have comprehensive applications such as chemical industry , metallurgy , environmental protection , mechanism , biology , medicine , aviations , magnetic materials and optical materials because of their specially physical and chemical properties . and with the development of nano - structured materials and their technology , their future applications are limitless
  由于具有独特的物理和化学特性，低维纳米材料目前在化工、冶金、环保、机械、电子、生物、医学、航天、军事、磁性材料、光学材料等领域有着广泛地应用，而且随着纳米材料和纳米技术的不断发展，其未来的应用前景更是无法估量。
• Typical temperature is 800 - 1000 in cvd diamond process , while the high temperature limits its application in optical window and coating such as gaas , zns etc . low temperature can not only make diamond crystal nucleus finer , reduce surface roughness of diamond films and lessen light dispersion , but also eliminate thermal stress
  化学气相沉积金刚石膜过程中，衬底的典型温度为800 1000 ，这么高的温度限制了其作为gaas 、 zns等低熔点光学材料窗口和涂层的应用。低温沉积金刚石膜不仅可以使晶粒细化，降低表面粗糙度，减小光的散射作用，而且可以消除热应力。
• Such measares as elecbe spetri , fluorescence spectruin in solution and in solid , two - photon absorphon , ophcal lindting are employed in these studies . we find that all of these compounds have ligh - excited emitting properies and non - linear absorphon properties at different extents . all of this properties lay out applied prospects of them in opt - eiectron funchonal materials area
  分为电子光谱，液体荧光，固体荧光，双光子吸收，光限幅和z扫描研究，发现产物都有光致发光性质，并有不同程度的非线性吸收性质，展示了其在光学材料领域的应用前景。
• In the last few decades , scientists have shown great interest in the study of new nonlinear optical materials , due to their widely use and attractive application foreground , for instance , in modern laser technology , optical communication , data storage , optical information processing , and other fields . it has become an important project to find new nonlinear optical materials of high efficiency
  近几十年来，由于非线性光学材料在现代激光技术、光学通讯、数据储存、光信息处理等器件中的广泛应用及其诱人的应用前景，引起了科学家们对新型非线性光学材料研究的浓厚兴趣，其中，如何研制高效的非线性光学材料成为一项重要课题。
• The feasibility that kaufman ion source is applied in reactive ion beam etching is discussed . etching characteristics of materials , including pr , cr , quartz , are investigated . the etch rate and mechanisms of such materials are measured and analyzed as a function of ion energy , ion beam density and ion incidence angle in pure ar and chf3 , respectively . the etch rate has shown a square root dependence on variation versus
  深入研究了光刻胶、铬薄膜、石英等光学材料离子束刻蚀特性,分别以ar气和chf3为工作气体,研究光刻胶、铬薄膜、石英等的刻蚀速率随离子能量,束流密度和离子入射角度的变化关系,得到刻蚀速率与影响因素的拟合方程,为掩模的制作工艺路线提供了实验依据和理论指导。
• At present , people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion . a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly , and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially . the quasi - phase - matching method has some advantages over birefrigence method , improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength
  由于准相位匹配技术有其独特的优势，可以利用非线性光学晶体的最大二阶极化张量，如ppln 、 pplt 、 ppktp用的非线性极化张量都是d _ ( 33 ) ,其有效非线性系数高出普通非线性光学介质(如bbo 、 lbo 、 ktp )一个数量级，而且可以人为灵活设计调制周期，通过周期设计其频率变换范围可以覆盖准相位匹配介质的整个透明波段，选择无走离效应，解决了常规pm难以解决的问题，拓宽了非线性晶体的应用范围，极大地提高了频率转换效率，已成为非线性光学材料和固体激光器的研究热点之一。