LATF、DLATF晶体的生长、性能以及激光损伤机理的探索研究

项目名称： LATF、DLATF晶体的生长、性能以及激光损伤机理的探索研究

项目编号： No.50872067

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 生物科学

项目作者： 许东

作者单位： 山东大学

项目金额： 43万元

中文摘要： 氨基酸是组成蛋白质的基本单元，在生命活动中起着重要的作用。同时，氨基酸盐晶体也是具有特色的新型非线性光学材料。L-精氨酸磷酸盐(LAP）晶体可实现高达90﹪以上的转换效率，更突出的是在强激光下具有其他晶体无法比拟的高激光损伤阈值，这使得它在强激光频率转换和相位共轭镜等方面表现出特别的价值。氨基酸盐晶体成为国际上非线性光学材料重要的研究领域。本项目在以前的研究基础上系统地合成制备了一系列具有胍基的氨基酸盐晶体，重点研究了L-精氨酸三氟乙酸盐(LATF)及其氘化晶体，得到了高质量的较大尺寸单晶，并对其性能进行了表征测试。重点对其高的抗光损伤机理进行了探索，得到了一些重要的结果。根据精氨酸磷酸和肌酸磷酸恰好是生物体内能量存贮物质与传输介质这一特点，探讨了LATF、LAP等晶体中胍基及相关结构参数和构象变化及激光损伤的机理，发现了氨基酸盐晶体的相变储能特性。在晶体材料与生物科学交叉探索中具有重要的科学意义。

中文关键词： LAP/DLAP晶体；LATF/DLATF晶体；激光损伤；非线性光学

英文摘要： Amino acids participate in life activities as the monomer for protein. Amino-acid derivate crystals are also the new type nonlinear optical crystals. LAP crystal can realize 90% frequency doubling efficiency and highest anti-laser damage threshold having application in high power laser frequency conversion and optical phase conjugation. Amino acid salts crystal has become the important research field of nonlienar otpical materials. We have synthesized a series of amino acids crystals with guanidyl groups in this project. The growth and properties of LATF and DLATF crystal is the research focus of the project. High quality and large size single crystals have been obtained. Properties have been measured and characterized especially on the mechanism of high anti-laser damage threshold and we have obtained some important results. As phosphate arginine (PA) and phosphocreaine (PC) work as the medium carrier for bioenergy transport and storage in biology and LATF and LAP have the same guanidyl group and conformational flexibilities which maybe have relationship with the high optical damage threshold properties.The discovery of the phase transition for energy storage in amino-acid salt crytals may also has potential influence and value in biology science.

英文关键词： LAP/DLAP crystal; LATF/DLATF crystal;laser damage;nonlinear optics