氟化镁光学晶体功能材料在甘肃研发成功

氟化镁（MgF2）晶体材料是国际上应用最早的性能优良的光学镀膜材料。随着我国工业的发展，荧光材料、高级光学陶瓷及玻璃、光学透镜涂层、红外元件及激光元件等高技术领域对氟化镁的需求量越来越大，对其纯度要求高达99．999％级的水平，而国产材料纯度低，全部依赖从德国、日本进口，且价格昂贵，每公斤高达2000元左右。     

甘肃成功研制光学晶体材料

氟化镁MgF2晶体材料是国际上应用最早的性能优良的光学镀膜材料。随着我国工业的发展，荧光材料、高级光学陶瓷及玻璃、光学透镜涂层、红外元件及激光元件等高技术领域对氟化镁的需求量越来越大，它纯度要求要达到99．999％级的水平，而国内的材料纯度低，全部依赖德国、日本进口，且产品价格昂贵，每公斤高达2000元左右。     

红外玻璃陶瓷的力学性能

在一定的温度和时间下对GeS2-Sb2S3-CsCl系红外玻璃进行微晶化处理,制备了新型的红外透明玻璃陶瓷.测定了微晶玻璃的力学性能和光学性能,研究了微晶化处理条件对微晶玻璃的力学性能和光学性能的影响.研究结果表明,玻璃基体中析出微晶晶体,使材料的断裂韧性和裂纹初始应力显著增大,但这种增大效应取决于析晶相的种类和晶体尺寸.为了保持微晶玻璃的红外透明性,析出的晶体尺寸应小于100nm.     

钼酸铅晶体表面红外增透膜的研究

本讨论了用于钼酸铅晶体表面的宽带红外增透膜的设计以及其在真空环境中的制备，膜系设计中，运用反射率图解法以获得满意的光学性能，与传统的热蒸发镀膜工艺相比，在真空沉积过程中采用了离子辅助沉积技术，从而大大提高了膜层的光学特性及膜层品系，试验表明所镀膜层性能优异，在光纤通信领域具有广阔的应用前景。     

Ge/ZnS一维光子晶体的设计、制备及低红外发射率性能

通过从理论上分析介质层厚度、不同介质材料的折射率差及周期数对一维光子晶体红外发射率的影响规律,设计得到了可实现8~14μm波段低红外发射率性能的Ge/ZnS一维光子晶体。随后采用光学镀膜技术在石英基片上通过交替沉积Ge层和ZnS层的方法制得所设计的一维光子晶体,并采用扫描电镜(SEM)及傅里叶变换红外光谱(FTIR)分别对其微结构及光谱发射率进行了系统研究。结果表明,所制备一维光子晶体在8~14μm波段具有低红外发射率性能,其平均发射率可低至0.195。采用Ge、ZnS等无机半导体材料,通过合理的一维光子晶体设计同样可以获得低至0.2以下的红外发射率。     

70GeS_2-15Ga_2S_3-15Ag_2S硫系微晶玻璃的制备及其光学、物理性能(英文)

利用传统的融熔-淬冷技术制备了70GeS2-15Ga2S3-15Ag2S硫系玻璃,并通过析晶处理成功地制得了含优异非线性光学晶体AgGaGeS4的硫系微晶玻璃。线性光学性能和维氏硬度研究表明该材料适于作为中红外光学材料应用。麦克条纹测试(Maker fringe)表明该微晶玻璃有着良好的二阶非线性光学性能。该硫系微晶玻璃是一种新型的中红外光学频率变换用候选材料。     

钼酸铅晶体表面红外增透膜的研究

本文讨论了用于钼酸铅晶体表面的宽带红外增透膜的设计以及其在真空环境中的制备。膜系设计中 ,运用反射率图解法以获得满意的光学性能 ;与传统的热蒸发镀膜工艺相比 ,在真空沉积过程中采用了离子辅助沉积技术 ,从而大大提高了膜层的光学特性及膜层品质。试验表明所镀膜层性能优异 ,在光纤通信领域具有广阔的应用前景     

石英晶体监控法镀制高精度光学薄膜

讨论了石英晶体监控法在光学薄膜镀制过程中的应用原理。通过与常规的光学监控法镀制的膜层相比较．证实了石英晶体监控法有助于提高光学薄膜的光学品质。试验表明所镀膜层的光学性能优异，在光通信和激光器等领域具有广阔的应用前景。     

蒸发镀热反射幕墙玻璃及其性能研究

热反射幕墙玻璃是现代化建筑标致性的材料之一。采用热蒸发镀膜与磁控溅射一样也能生产出性能优良的幕墙玻璃。用特殊的前处理和后处理手段弥补热蒸发镀膜附着力差的缺陷。对蒸发和质量分布经计算机模拟，设计出最佳的蒸发源阵布局，使膜厚的均匀度＞90％，视觉色差接近于零。专门研制的四组分合金材料使幕墙玻璃的力学、化学、光学性能得到保证。耐磨性：用SMG－1硬度试验机，质量200g,900圈无磨痕。耐酸碱性：50％HCl,5%H2SO4,5%NaOH溶液，室温各24h，无变化。透射率10％－30％，反射率30％－60％。     

碲酸盐系统玻璃组成和结构对非线性光学性能的影响

碲酸盐系统重金属氧化物玻璃是一种优秀的非线性光学玻璃材料，具有较大的三阶非线性光学效应、超快光学响应、较宽红外透过范围、较好稳定性以及广泛应用前景。碲酸盐系统玻璃中的中间离子和网络外离子的加入会改变组成网络的配位多面体组成、键性和能带结构，进而影响玻璃的非线性光学性能。探讨了碲酸盐系统玻璃的网络结构，阐述了玻璃组成、结构以及纳米簇和非线性光学性能之间的相互关系。     

长波红外玻璃的研究

长波红外玻璃具有优异的红外性能,作为视窗、透镜、整流罩等在光电技术领域中应用广泛。长波红外玻璃材料主要包括硫系玻璃、卤系玻璃和硫卤玻璃等。综述了长波红外玻璃材料的基本性能、国内外研究现状和应用,最后指出了其存在问题及发展趋势。     

Sn对Ge-Se-Te玻璃结构与光学特性的影响

采用熔融淬冷法制备了系列Ge₃Se₅Te₂Sn_x(x=0、0.4、0.8、1.2、1.6、2.0, mol%)硫系玻璃。采用X射线衍射(XRD)图谱、差示扫描量热曲线(DSC)、可见/近红外光谱、傅里叶红外(FTIR)光谱、显微拉曼光谱等手段对玻璃的物化性能及结构进行表征, 研究发现Sn的引入导致Ge-Se-Te玻璃系统物化性能的变化: 玻璃的转变温度T_g降低、红外截止波长发生红移, 并有效地降低了杂质吸收峰对样品红外透过率的影响。利用Philips网络约束理论计算的玻璃平均配位数及拉曼光谱的变化, 讨论了引入Sn对Ge-Se-Te玻璃的影响。     

Optical properties of oxide glasses containing transition metals: Case of titanium- and chromium-containing glasses

One of the major driving forces for the development of new glasses is the demand for high optical non-linearity with reduced cost and a higher damage resistance. Oxide glasses with large non-linear refractive index and non-linear absorption coefficient are promising materials for fiber telecommunication and for non-linear optical devices such as ultrafast optical switches, power limiters, real time holography, self-focusing, white-light continuum generation and photonic applications. To get insight into the optical absorption in amorphous materials, studies are still needed for revealing the nature of photoelectronic excitations in these materials by comparison with that in crystals which have been understood firmly based on band theory. Although the IR absorption loss in oxide glasses is larger than of fluorides, low light scattering loss is expected in these oxide glasses because they have lower glass transition temperature. In addition, small concentration of dopant such as alkaline metal and alkaline earth metal elements gives rise to the structural relaxation of the frozen-in density fluctuations even below glass transition temperature T_g, adding to the reduction of T_g as well. A review of the fundamentals and recent research advances in optical properties of oxide glasses containing chromium or titanium is presented.     

绿色材料伪装性能检测技术分析

绿色材料是一种重要的伪装材料。伪装上不仅要求绿色材料的颜色与绿色植物近似，而且要求其近红外反射特性与绿色植物近似。伪装绿色检验镜是一种检验绿色颜料与植物绿色异谱程度的器材，论文提出了伪装绿色检验镜镜片的光谱透射特性要求，分析了其检色原理和检色效果，为绿色材料近红外伪装性能的检验提供了一种简便可行的方法。     

Bulk Metallic Glasses with Functional Physical Properties

In this review, we report on the formation of a variety of novel, metallic, glassy materials that might well have applications as functional materials. The metallic glasses, with excellent glass‐forming ability, display many fascinating properties and features such as excellent wave‐absorption ability, exceptionally low glass‐transition temperatures (～35–60 °C) approaching room temperature, ultralow elastic moduli comparable to that of human bone, high elasticity and high strength, superplasticity and polymer‐like thermoplastic formability near room temperature, an excellent magnetocaloric effect, hard magnetism and tunable magnetic properties, heavy‐fermion behavior, superhydrophobicity and superoleophobicity, and polyamorphism, all of which are of interest not only for basic research but also for technological applications. A strategy based on elastic‐moduli correlations for fabrication of bulk metallic glasses (BMGs) with controllable properties is presented. The work has implications in the search for novel metallic glasses with unique functional properties, for advancing our understanding of the nature and formation of glasses, and for extending the applications of the materials.     

硫系玻璃磁光性能的研究进展

硫系玻璃因其Verdet常数与温度无关,容易制备成光纤、光波导等优点而成为磁光材料的研究热点。对硫系玻璃的磁光性能研究情况进行了综述,详细分析了影响硫系玻璃Verdet常数的因素,最后提出了硫系磁光玻璃的进一步发展方向。     

Optimization of chalcogenide glass in the As–Se–S system for automotive applications

Infrared transmitting glasses in the As–Se–S system have been optimized by taking in account specifications for automotive application. The As₂Se₃ glass has been chosen as the starting composition and sulfur is introduced in order to improve some optical and mechanical properties. As expected, the Sulfur introduction decreases the refractive index as well as its change as function of temperature. The relationship between the refractive index and the glass composition has been established. The thermal coefficient of refractive index for sulfur containing glasses can be lower than 4 × 10⁻⁵ K⁻¹, which is considerably lower than that of germanium, the most used infrared transmitting materials. Influence of sulfur on other properties has also been studied.     

骨修复用生物玻璃复合材料研究进展

生物玻璃是一类性能优良的生物材料,具有良好的生物活性和生物相容性,作为骨修复植入体可以在材料界面与人体骨组织之间形成化学键合,诱导骨的修复与再生.将生物玻璃与其它材料进行复合,可以制备出生物活性和机械性能优良的骨修复复合材料.综述了生物玻璃复合材料的研究现状,并探讨了该类材料目前存在的不足,展望了其发展趋势.     

Excited state characteristics of the Li2B4O7 and KLiB4O7 glasses activated by Cr3+ ions

The excited state characteristics by means of the excited state absorption (ESA), optical gain and bleaching spectra have been measured for prototype glasses with Li₂B₄O₇ (LBO) and KLiB₄O₇ (KLBO) compositions activated by Cr³⁺ ions. The work addressed to search for novel attractive media for broadband lasers and amplifiers, is a completion of detailed spectroscopic evaluation described in earlier papers. One of the examined materials (KLBO), in accordance with optimistic comments given in previous work, reveals a very broad gain spectrum in the near IR, which itself is interesting in view of very few reports on glasses showing optical gain for Cr³⁺ ions in the low-field local environment. The ESA/gain/bleaching spectra, registered with equipment of improved sensitivity, have been reproduced by calculations, and detailed single configuration coordinate diagram, based on experimental data, has been created for interpretation.