苯基荧光酮在混合表面活性剂体系中铜、铝的分光光度法同时测定

本文对在溴代十六烷基三甲铵和吐温８０混合表面活性剂中苯基荧光酮分光光度法同时测定铜和铝进行了研究。实验表明，在磷酸介质中，ｐＨ＝６．８－７．４范围内，苯基荧光酮与铜、铝形成稳定的络合物。铜络合物最大吸收波长为６００ｎｍ，εＣｕ６００＝６．６３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，线性范围为０—５μｇ／２５ｍＬ；铝络合物最大吸收波长为５６４ｎｍ，εＡｌ５６４＝１．０１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，线性范围０—６μｇ／２５ｍＬ。方法灵敏度高，选择性好，用于水及健康人体冻干血浆中铜、铝回收率的测定，结果满意。     

分光光度法测定烟叶中镁的研究

在ｐＨ＝ ７．０ ＮＨ４Ａｃ 缓冲介质中,苦氨酸偶氮－Ｈ－酸（ＰＨＡ）与镁反应生成２∶１ 蓝紫色络合物,λｍ ａｘ＝６３０ｎｍ ,ε＝ １．１６×１０４Ｌ·ｍ ｏｌ－ １·ｃｍ － １,镁的含量在０．５－ ４０μｇ／２５ｍ Ｌ内符合比尔定律,本方法用于烟草样品中镁的测定,结果令人满意。     

高山宇宙线粒子电磁簇射的研究

在海拔３２００ ｍ高山,用一台有效体积为４５×４５×１４ｃｍ３的多板云室,测量了宇宙线贯穿粒子的电磁簇射几率,传递能量范围为 ０．４－２ ＧｅＶ．获得了８０１个有用事例,得到选入的高山宇宙线粒子在 １．２５ ｃｍ厚铅层中产生电磁簇射的平均几率是［４．６２±０．７６］×１０－3 ,大于由理论和加速器实验数据推出的μ,Ρ。π±的电磁簇射几率．用统计方法对实验结果进行了分析．     

邻羧基苯基荧光酮与碲显色反应的研究及应用

在ｐＨ＝４．５ＨＡｃ－ＮａＡｃ缓冲介质中,ＣＴＭＡＢ存在下,邻羧基苯基荧光酮（ｏ－ＣＰＦ）和Ｔｅ（Ⅳ）生成４∶１稳定络合物,λｍａｘ＝５６０ｎｍ,ε＝１．２５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。Ｔｅ（Ⅳ）含量在０—１０μｇ／２５ｍＬ内符合比耳定律,方法用于烟尘中碲的测定,结果令人满意。     

共光路外差干涉法精密测量光学表面

报道了光学外差法测量表面起伏精度及横向分辨精度达到０．１１ｎｍ及４μｍ。本文采用的是完全共光路外差干涉系统，阐述了它的原理、构造及噪声的影响，并将测量结果与其它商品仪器测量结果作了比较。     

分光光法测定烟叶中钙的研究

在弱碱性介质中,乳化剂－ＯＰ存在下,羟基萘酚蓝（ＨＮＢ）和钙生成蓝色２∶１ 络合物,λｍａｘ＝ ６５０ｎｍ ,ε＝ １．８６×１０４Ｌ·ｍ ｏｌ－ １·ｃｍ － １,钙含量在０－ ４０μｇ／２５ｍ Ｌ内符合比尔定律,本方法用于烟叶中钙的测定,结果令人满意。     

苯基荧光酮分光光度法测定煤矸石中钛

本文研究和比较了几种表面活性剂存在下,苯基荧光酮（ＰＦ）与钛的显色反应。试验表明,在０．０３－０．０５ｍｏｌ·Ｌ－１的硫酸介质中,钛与ＰＦ形成蓝紫色配合物,最大吸收峰在５９５ｎｍ处,表观摩尔吸光系数ε＝６．３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１。钛量在０－１５μｇ／２５ｍＬ范围内服从比耳定律。方法灵敏度高,选择性好,抗干扰能力强,体系稳定,测定煤矸石中钛,结果满意。     

高精度表面粗糙度外差干涉仪信号处理系统的研制

针对用于磨床加工的光外差表面粗糙度在线干涉测量仪，文中介绍了整机的信号处理系统，着重讨论了两项关键技术。即宽动态范围测量信号的自动控制和高精度动态相位测量，系统的测量精度达２．６°（相当于３．２ｎｍ），允许测量中最大多普勒频移±２０ｋＨｚ（对应高度的变化率±８．７５×１０－３ｍ／ｓ），完全满足磨床加工中表面粗糙度在线测量的要求。现场测试证实了这一点，这对于精加工、超精加工表面粗糙度的在线质量控制、提高加工精度等非常重要。     

二磺基苯基荧光酮光度法测定钢中微量钨

研究了二磺基苯基荧光酮（ＤＳＰＦ）与钨的显色反应条件,体系λｍａｘ＝５３０ｎｍ,ε＝１．６２×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１,钨的含量在０￣１５μｇ／２５ｍＬ内符合比耳定律,方法用于钢样中钨的测定,结果满意。     

新试剂2-(4-安替比林偶氮)-5-二乙氨基苯胺与钯显色反应的研究及应用

在ｐＨ＝５．０ＨＡｃ－ＮａＡｃ缓冲介质中,吐温－８０存在下,２－（４－安替比林偶氮）－５－二乙氨基苯胺（ＡＤＥＡ）与钯生成２∶１红色络合物,λｍａｘ＝５３０ｎｍ,ε＝６．１５×１０４Ｌ·ｍｏｌ－１·ｃｍ－１,钯的含量在０—２０μｇ／２５ｍＬ内符合比耳定律,本方法用于钯催化剂中痕量钯的测定,结果令人满意。     

具有高空间分辨力的整形环形光式差动共焦测量法

提出一种新的具有高空间分辨力的整形环形光式差动共焦测量方法。该方法通过整形环形光式共焦测量法和锐化爱里斑主瓣，改善系统横向分辨力；通过差动共焦测量法改善系统的轴向分辨力，最终达到提高系统空间分辨能力的目的。理论分析和实验表明：整形环形光内孔归一化半径ε越大，横向分辨力改善越明显，量程扩展范围越宽；当入射光波长λ=632.8nm，物镜数值孔径取NA=0.85，ε=0.5时，该系统的横向分辨力优于0.2μm，轴向分辨力优于2nm。该方法为光触针测量系统空间分辨力的提高提供了1种新的方法，可广泛应用于超精密三维微细结构工件的超精密测量。     

Fiber Optic Coupling of CW Linear Laser Diode Array

Based on a set of microoptics the output radiation from a continuous wave (CW) linear laser diode array is coupled into a multi-mode optical fiber of 400 μm diameter.The CW linear laser diode array is a 1 cm laser diode bar with 19 stripes with 100 μm aperture spaced on 500 μm centers.The coupling system contains packaged laser diode bar,fast axis collimator,slow axis collimation array,beam transformation system and focusing system.The high brightness,high power density and single fiber output of a laser diode bar is achieved.The coupling efficiency is 65% and the power density is up to 1.03×104 W/cm2.     

Fiber Optic Coupling of CW Linear Laser Diode Array

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　　Ｌａｓｅｒｄｉｏｄｅａｒｒａｙ (ＬＤＡ )ｔｈａｔｈａｓｍｕｌｔｉｐｌｅｅｍｉｔｔｉｎｇｒｅｇｉｏｎｓｉｓａｐｅｒｆｅｃｔｄｅｖｉｃｅｔｏａｃｈｉｅｖｅｈｉｇｈｅｒｐｏｗｅｒｏｕｔｐｕｔｓｗｉｔｈａｎｉｎｃｒｅａｓｅｄｂｒｉｇｈｔｎｅｓｓ.ＴｈｅｈｉｇｈＣＷ ｐｏｗｅｒ ,ｈｉｇｈｂｒｉｇｈｔｎｅｓｓａｎｄｆｉｂｅｒｏｕｔｐｕｔｏｆａｌａｓｅｒｄｉｏｄｅｂａｒｃａｎｂｅａｐｐｌｉｅｄｉｎｍｅｄｉｃｉｎｅ ,ｍａｔｅｒｉａｌｓｐｒｏｃｅｓｓｉｎｇ ,ｓｏｌｉｄ ｓｔａｔｅｌａｓ…     

Practical common-path heterodyne surface profiling interferometer with automatic focusing

In modern semiconductor and optics industries, there is a strong demand for a highly sensitive and non-contact surface profilometer. This paper describes a practical heterodyne surface profiling interferometer for on-line non-contact measurement which has been developed recently. The essential feature of the profilometer is a newly designed common-path configuration to minimize the effects caused by vibration, air turbulence and other environmental variations. A single-mode frequency-stabilized laser diode (780 nm) serves as the light source to make the whole system compact (total volume 250L×200W×100H mm). A powerful signal processing scheme is also developed, which includes three parts: automatic voltage control, phase measurement with wide range and automatic focusing control. All these make the repeatability and stability of the profiling interferometer greatly improved. The system has vertical resolution of 0.39 nm and lateral resolution of 0.73 μm. During approximately an hour, the stability is within 1.95 nm(3σ).     

Improvement of confocal microscope performance by shaped annular beam and heterodyne confocal techniques

In order to further improve the performance of a confocal microscope (CM) used for measurement of surface profiles and 3D microstructures, a shaped annular beam heterodyne confocal measurement method based on annular pupil filter technique and reflection confocal microscopy, is proposed to expand the measurement range and to improve the defocused property of CM. The approach proposed uses a confocal dual-receiving light path arrangement and a heterodyne subtraction of two signals received from detectors with axial offset to enable CM to be used for bipolar absolute measurement and to improve the defocused property of CM, and it uses the annular pupil filter technique to produce a binary optical shaped annular beam, which expands the measurement range by expanding the full-width at half-maximum of intensity curve received from two detectors in a heterodyne confocal microscopy system. Theoretical analyses and experimental results indicate that a shaped annular beam heterodyne microscope has a measurement range expanded from 4 to 14 μm, achieved an axial resolution of 2 nm and improved the defocused property, when ε=0.5 and NA=0.65. It can be therefore concluded that the shaped annular beam heterodyne confocal measuring method proposed is a new approach to ultraprecision measurement of surface profiles and 3D microstructures.     

在AgGaSe2晶体中TEA CO2激光的倍频产生

用炉温下降法生长出尺寸为φ２０×６０ｍｍ的ＡｇＧａＳｅ２单晶体。在１２ｍｍ长，切角为５５°的ＡｇＧａＳｅ２中，获得了ＴＥＡＣＯ２激光的倍频输出，其功率转换效率为１．１２％。泵浦阈值和破坏阈值分别为３ＭＷ／ｃｍ２和１１ＭＷ／ｃｍ２。还讨论了泵浦束的发散角对二次谐波转换效率的影响。     

Measurement of small displacement based on surface plasmon resonance heterodyne interferometry

This paper proposes an optical method for measuring small displacements using the surface plasmon resonance (SPR) heterodyne interferometry. A heterodyne light beam reflected by a mirror passes through a hemisphere glass and then enters into a surface plasmon resonance apparatus at the resonant angle. A small displacement of the mirror will introduce a phase-difference variation between p- and s-polarizations of the light emerging from the SPR apparatus. The phase-difference variation can be precisely measured with the heterodyne interferometric technique, and the associated displacement can be estimated. The feasibility of this method was verified by experiment, and the displacement measurement resolution of about 1.4 nm over a traveling range of 6 μm was achieved. Our method of measurement has the merits of both common-path interferometry and heterodyne interferometry.     

一种基于光学倍乘原理的绝对距离干涉测量系统

介绍了一个基于光学倍乘原理的绝对距离干涉测量系统。系统包括两个干涉仪:采用半导体激光器作为光源的定位干涉仪和测量位移的外差干涉仪。介绍了光源的选择,系统的设计以及信号的采集和处理方案。采用这套绝对测量系统,可以实现长度为2m以内的绝对距离测量,定位精度可以达到±0.5μm。     

Laser Alignment Techniques for Simultaneously Measuring Five Degree-of-freedom Deviations of the Object

An optical measurement system has been developed for the simultaneous detection for five degree-of-freedom (DOF) deviations of the object. The measuring system designed bases on laser holographic technique, laser alignment technique, laser drift compensation technique and magneto-optic modulating technique where a single laser beam is used as datum line. This measuring system is applied to multiple degree-of-freedom alignment and measurement of fine deviation, and it carries out the automatic testing in a deformation of machine tool, or the loaded axon in a strain wind tunnel balance. Through actual calibration and measurement, the resolution of the system is estimated to be 4 μm for linear displacement error measurement and better than 2″ for angular error measurement with a 1 m offset between laser and a photoelectric receiving target.