《光学 精密工程》1-3期(第15卷)总目次

总目次·现代应用光学·软X射线掠入射金属光栅闪耀特性的校正傅里叶展开微分法分析…………巴音贺希格,朱洪春(1-1)约束抽样Hough变换的光纤端面精确定位………………………崔继文,谭久彬,敖磊,康文静(1-9)光纤傅里叶变换光谱仪采样系统…………………………………李保生,刘勇,于清华,王安(1-16)Li NbO3外调制器的10 Gbit/s光纤传输系统…………………………………………………郭玉彬,霍佳雨,靳江涛,王天枢,闫红伟,李沛然(1-22)改进的飞秒激光加工微型光波导方法…………………龚小竞,褚家如,杨建军,张铁群,朱晓农(1-27)激光测高仪的回…     

《光学 精密工程》1-5期(第15卷)总目次

现代应用光学软X射线掠入射金属光栅闪耀特性的校正傅里叶展开微分法分析巴音贺希格,朱洪春(1-1)约束抽样Hough变换的光纤端面精确定位崔继文，谭久彬，敖磊,康文静(1-9)光纤傅里叶变换光谱仪采样系统李保生，刘勇,于清华，王安(1-16)LiNbO3外调制器的10 Gbit／s光纤传输系统郭玉彬，霍佳雨，靳江涛，王天枢,闫红伟,李沛然(1-22)改进的飞秒激光加工微型光波导方法龚小竞,褚家如，杨建军,张铁群，朱晓农(1-27)激光测高仪的回波信号理论模型李松,周辉,石岩，郭耀(1-33)单次散射近似研究非视线光传输中的误差贾红辉，常胜利，杨建坤,兰勇，…     

用于FTS干涉图信号处理的多阶带通滤波器研究

滤波技术的应用是傅里叶变换光谱仪对于光源光谱再现的关键,利用连续时间滤波器Max274设计了Chebyshev带通滤波器,结合实际研制的16阶带通滤波器性能与设计指标符合较好.限制了傅里叶变换光谱仪测量频宽,有效克服了光谱仪光谱测量中汞灯光源交流信号的影响.     

傅里中变换光谱仪基本参数的设计研究

傅里叶变换光谱仪基本工作参数的确定是仪器设计水平和应用效果的主要决定因素。本文阐述设计可见区傅里叶变换光谱仪时对其主要工作参数的研究，并给出了设计和实验结果。     

傅里叶变换光谱仪基本参数的设计研究

傅里叶变换光谱仪基本工作参数的确定是仪器设计水平和应用效果的主要决定因素。本文阐述设计可见区傅里叶变换光谱仪时对其主要工作参数的研究，并给出了设计和实验结果     

傅里叶变换红外遥测光谱仪在泡沫云红外消光性能测试中的应用

采用Bruker OPAG33傅里叶变换红外遥测光谱仪,对3-5μm和8-14μm波段泡沫的消光性能进行测试研究。通过计算得出其透过率,结果表明Bruker OPAG33傅里叶变换红外遥测光谱仪能够较好的对泡沫云的中远红外消光性能进行评价。     

纳米氧化锌物化性质的研究

通过使用扫描电镜、傅里叶变换红外光谱、X射线衍射、透射电子显微镜和原子力显微镜检测了纳米氧化锌的物化特性,为其在生产中的合理应用提供依据。     

傅里叶光谱仪的智能数据采集器与光谱数据处理系统

根据傅里叶光谱学的基本原理,组成傅里叶变换光谱仪实时数据采集和处理系统。系统中智能数据采集器对干涉图作数据采集,配以干涉图处理与谱图变换软件包的IBM-PC/XT微机作为光谱数据处理系统,对干涉图进行数据处理与谱图变换,以获得正确的光谱图。     

铝碳酸镁及其伪品的结构鉴定

采用傅里叶变换红外(FTIR)光谱法和X射线衍射法对4个铝碳酸镁样品进行了结构分析。结果表明,4个样品中,有2个是真品,有2个是伪品。结论:FTIR光谱法和X射线衍射法可快捷、准确地鉴别铝碳酸镁及其伪品。     

全光纤激光傅里叶变换光谱仪的研究

提出将相移技术和数学插值方法应用到全光纤激光傅里叶变换光谱仪中,来消除压电陶瓷(PZT)光纤拉伸器的非线性误差,并进行理论模拟仿真,证明了该方法的有效性。由于直接利用简单的开环电路进行扫描,消除了复杂的闭环电路控制。因此,为制造高分辨力、高通量、高速、低成本和小型化的全光纤激光傅里叶变换光谱仪提供了一种新的方法。     

软X射线-真空紫外傅里叶变换光谱仪及其光谱分辨率研究

描述在研的软X射线-真空紫外傅立叶变换光谱仪原理样机预期结构和性能,讨论并分析了影响谱仪光谱分辨率及谱线位移的因素,结合大数据量FFT数值算法给出实际仪器参数情况下的典型光谱线模拟曲线。     

傅立叶变换光谱仪现状及其微型化进展

本文通过查阅大量的文献与产品信息,总结归纳了目前傅立叶变换光谱仪特别是微型的傅立叶变换光谱仪的结构类型,发展概况与进展。首先概述了时间调制型和空间调制型傅立叶变换光谱仪的基本原理、结构部件、优势缺陷以及研究进展;而后对目前市场上的傅立叶变换光谱仪器产品进行了整理与分析,对各项技术性能指标进行了评述;最后着重对微型傅立叶变换光谱仪的进展作了综述。     

一种全新的超高灵敏度X射线荧光光谱仪

用X射线全反射技术可以使X射线单色化，用这种单色化的特征X射线作为激发源可以大大降低X射线荧光光谱仪的本底信号，提高仪器的检测灵敏度，本文介绍了这种仪器的结构原理，性能特点及应用。     

红外傅里叶光谱仪的仪器线形函数及工程应用

提出了利用定量化的仪器线形函数对面阵傅里叶光谱仪像元进行光谱修正的方法。系统介绍了傅里叶光谱仪的仪器线形函数,结合仪器的自身特征建立了仪器线形函数模型,并利用MATLAB进行了仿真计算。通过理论计算给出了中心像元和边缘像元的激光光谱波峰之间的差值,其同实际值的相对误差均值仅为4.21%,修正后的边缘像元光谱准确度达到10-5量级。得到的结果从理论角度证明了利用仪器线形函数对面阵型傅里叶光谱仪进行光谱修正的有效性。最后从实际工程应用的角度出发,提出了针对面阵傅里叶光谱仪非中心像元光谱修正的方法。实验显示该方法具有很强的普适性,可在保证较高光谱准确度的基础上极大地提高光谱定标的效率,降低光谱定标的工作量。     

Characterization of the calcification of cardiac valve bioprostheses by environmental scanning electron microscopy and vibrational spectroscopy

Bioprosthetic heart valve tissue and associated calcification were studied in their natural state, using environmental scanning electron microscopy (ESEM). Energy dispersive X‐ray micro‐analysis, X‐ray diffraction, Fourier‐transform infrared and Raman spectroscopy were used to characterize the various calcific deposits observed with ESEM. The major elements present in calcified valves were also analyzed by inductively coupled plasma–optical emission spectroscopy. To better understand the precursor formation of the calcific deposits, results from the elemental analyses were statistically correlated. ESEM revealed the presence of four broad types of calcium phosphate crystal morphology. In addition, two main patterns of organization of calcific deposits were observed associated with the collagen fibres. Energy dispersive X‐ray micro‐analysis identified the crystals observed by ESEM as salts containing mainly calcium and phosphate with ratios from 1.340 (possibly octacalcium phosphate, which has a Ca/P ratio of 1.336) to 2.045 (possibly hydroxyapatite with incorporation of carbonate and metal ion contaminants, such as silicon and magnesium, in the crystal lattice). Raman and fourier‐transform infrared spectroscopy also identified the presence of carbonate and the analyses showed spectral features very similar to a crystalline hydroxyapatite spectrum, also refuting the presence of precursor phases such as β‐tricalcium phosphate, octacalcium phosphate and dicalcium phosphate dihydrate. The results of this study raised the possibility of the presence of precursor phases associated with the early stages of calcification.     

OM,SEM–EDX,and micro‐FTIR analysis of the Bronze Age pottery from the Băile Figa salt production site (Transylvania,Romania)

This article presents the results of analyses carried out on a lot of 11 fragments of Bronze Age ceramics discovered in the site from B?ile Figa (Beclean town, Transylvania, Romania), where salt exploitation occurred. The samples were analyzed by means of optical microscopy, on the basis of which the morphology and distribution of the inclusions in the ceramic paste was established. Likewise, the samples were analyzed by scanning electron microscopy with energy‐dispersive X‐ray spectrometry, producing microphotographs for each sample, and on the basis of the X‐ray spectra, the elemental composition in gravimetric percentages was established. Through the micro‐Fourier‐transform infrared spectroscopy analysis, on the basis of characteristic group vibrations, it was possible to ascertain the nature of the compounds from the ceramic samples. These analyses will contribute to the reconstruction of the prehistoric technologies for salt exploitation.     

C/Al软X射线多层膜反射镜的制备与测量

在λ＝ ２８．５ｎｍ 波长处,我们选择了一种新的多层膜材料对Ｃ／Ａｌ。正入射Ｃ／Ａｌ多层膜在１５．０ｎｍ 附近有很低的二级衍射峰。磁控溅射法制备的Ｃ／Ａｌ多层膜样品,用Ｘ射线小角衍射法对其结构进行了测试,并测得Ｃ／Ａｌ软Ｘ射线多层膜的正入射反射率２２％ ±４％ 。     

基于拟合算法的傅里叶变换光谱仪光谱反演

在傅里叶变换光谱仪(FTS)中,精确获取每个干涉信号采样点处的光程差是获取光谱图的关键。动镜速度的波动会对等时间采样造成采样误差,而当目标光源波长较短时无法直接利用传统方法进行等光程差采样。分析了速度波动误差对光谱的影响,并提出了一种基于拟合算法计算干涉信号每个采样点处光程差的方法,在动镜速度波动较大的情况下对可见光波段的干涉信号进行采样反演。实验结果表明,此方法准确度高,适用于各种傅里叶变换光谱仪。     

Quantitative imaging of Candida utilis and its organelles by soft X‐ray Nano‐CT

Soft X‐ray microscopy has excellent characteristics for imaging cells and subcellular structures. In this paper, the yeast strain, Candida utilis, was imaged by soft X‐ray microscopy and three‐dimensional volumes were reconstructed with the SART‐TV method. We performed segmentation on the reconstruction in three dimensions and identified several types of subcellular architecture within the specimen cells based on their linear absorption coefficient (LAC) values. Organelles can be identified by the correlation between the soft X‐ray LAC values and the subcellular architectures. Quantitative analyses of the volume ratio of organelles to whole cell in different phases were also carried out according to the three‐dimensional datasets. With such excellent features, soft X‐ray imaging has a great influence in the field of biological cellular and subcellular research.