激光多普勒超低速测量

报道激光多普勒超低速测量系统及实验结果，其光学系统为四光路双焦点外差多普勒测速系统，信号处理系统为动态模拟相位计，可测速度范围为１ｎｍ／ｓ到３００ｍｍ／ｓ。     

非线性附加耦合腔产生超短激光脉冲

系统地研究了用带有非线性倍频晶体的附加耦合腔来压窄激光光脉冲的动力学作用过程，首次给出了该锁模激光系统在瞬态平衡时输出脉宽的具体表达式，实验测量结果与理论计算值相比吻合得很好；最后，文中还报道了有关实验参量与该锁模激光系统输出特性的关系曲线。     

磁致伸缩光纤磁光光学双稳态

报道了一种基于磁致伸缩原理实现的全光纤结构磁光光学双稳态装置。与分立元件的磁光双稳系统相比较，该系统的双稳开关功率降低了２～３个数量级，实验结果与理论计算相符。     

超临界水生物质催化气化制氢实验系统与方法研究

在分析比较目前国际上较好的几种超临界水生物质催化气化制氢实验系统及实验方法的基础上，成功地设计研制出一套连续式超临界水湿生物质催化气化制氢实验系统，简要介绍了该系统的特点及使用该系统取得的初步实验结果，并对各类实验系统存在的问题及待改进处作了分析．     

简易OMA系统在钢样成分快速光谱定量分析中的应用

本文报道了用简易光学多道分析仪系统作快速光谱速量分析的实验方法及特点；认真测定了不同钢样中Ｃｒ和Ｍｎ两元素的含量。     

电光双稳系统中混沌控制的动态存储

报道了电光双稳系统输出振荡混沌区的二次反分岔区域中使用连续自反馈控制的方法实现动态存储的实验研究。李雅普诺夫指数分析和计算机数值模拟表明这处方法是可行的，混沌控制前后输出振荡分岔图的对比显示了使用这种方法实现稳定动态存储的物理机制。实验结果与理论模拟一致，动态存储，电光双稳系统。     

用单池布里渊增强四波混频改善SBS系统位相共轭度

本文报道用布里渊增强四波混频改善受激布里渊系统位相共轭度的实验研究，与一般配置ＳＢＳ相比，系统位相共轭度从０．５８提高到０．７８。     

聚焦光束模拟湍流效应自适应光学补偿实验

报道了聚焦光束传输模拟湍流效应校正实验研究，描述了短曝光情况下，补偿效率积分概率的意义，给出了本套自适应光学系统补偿效率与变形镜驱动器的光束发射直径上的平均间中距和湍流相干长度的系统定标关系。     

全光纤白光任意反射面速度干涉系统

对离散任意反射面速度干涉系统和全光纤白光任意反射面速度干涉系统（ＦＶＩＳＡＲ）作了较全面的分析，论证了全光纤任意反射面速度干涉系统的主要意义在于实现了理想的空间相干、等程干涉、以及方便灵活的延时设置和极低的系统损耗。给关细的设计要点，报道了所研制的低激光二极管功率实验系统。以该系统进行了霍布金森杆一维应力加载下的自由面速度测试。实验结果与阻抗匹配法计算结果吻合很好，并获得了加载减载过程中产生的自由     

稀磁半导体的制备与性质

报道了稀磁半导体的制备、性质与实验研究进展，介绍了稀磁半导体的应用及发展前景．     

CCD在光谱分析系统中的应用研究

本文对利用ＣＣＤ作传感器件进行光谱分析的方法进行了理论和实验研究。通过分析ＣＣＤ的结构特点和光电特性，从理论上证明了利用ＣＣＤ进行光谱分析的可行性，设计了一套适合线阵ＣＣＤ的高速图像采集卡，建立了一套智能化光谱数据采集分析系统。该系统主要由光栅、ＣＣＤ传感器及数据采集卡、计算机等部分组成。我们用高压汞灯作为标准光谱进行定标，得到了一个非常简单的计算光谱的数学公式。实验表明该系统具有较高的测量精度，特别适用于瞬态过程的光谱分析。     

A Novel Laser-Based System for Measuring Internal Thread Parameters

Based on the theory of laser measurements, we propose a novel laser-based automatic inspection system for measuring the internal thread parameters, which integrates the laser-based measuring unit to detect the longitudinal section of the thread profile and the dual-axis moving stage for the movement of an undetected object. We design a special laser probe based on the bidirectional inclination scanning method for obtaining the thread-profile data. This method and structural design enables the laser probe to overcome the shortcomings of traditional methods for measuring large inclined surfaces and eliminate the impact of the lead angle. We compare our results of internal thread-parameter measurements with the coordinate measuring machine (CMM) system and investigate the repeatability with one internal screw ring gage by the system proposed. The experimental results show that the measurement accuracy of the thread angle is 2′ and the other parameters are less than 4 μm.     

聚变反应时间历程的双峰结构测量

利用新研制的聚变反应速率测量系统,在神光Ⅲ原型装置上测量了间接驱动时充DT气体的玻璃球壳内爆靶丸的聚变反应速率的时间历程,获得了DT中子产额约为1010时的聚变反应速率随时间的变化过程,发现了聚变中子发射在时间上的双峰结构。利用辐射流体程序对聚变中子在时间上的双峰结构进行了数值模拟,发现双峰结构分别由冲击压缩过程和惯性压缩过程产生,靶丸壳层厚度不同时产生的聚变中子发射双峰强度比变化可能是由靶丸的初始表面调制度不同所致。通过理论模拟与实验结果的对比,验证了中子聚变反应历程的双峰结构。     

Generation of macroscopic entangled coherent states with large Josephson junctions

We propose a simple and experimental architecture to generate macroscopic entanglement in a solid system which consists of two large Josephson junctions and a flux qubit. Through quantum measuring of flux qubit, entangled coherent states of two large Josephson junctions are obtained. The concurrence of entangled coherent states can be accommodated by adjusted systematic parameters. We also give a brief discussion on the experimental feasibility of this proposal.     

聚变反应时间历程的双峰结构测量

利用新研制的聚变反应速率测量系统,在神光Ⅲ原型装置上测量了间接驱动时充DT气体的玻璃球壳内爆靶丸的聚变反应速率的时间历程,获得了DT中子产额约为1010时的聚变反应速率随时间的变化过程,发现了聚变中子发射在时间上的双峰结构。利用辐射流体程序对聚变中子在时间上的双峰结构进行了数值模拟,发现双峰结构分别由冲击压缩过程和惯性压缩过程产生,靶丸壳层厚度不同时产生的聚变中子发射双峰强度比变化可能是由靶丸的初始表面调制度不同所致。通过理论模拟与实验结果的对比,验证了中子聚变反应历程的双峰结构。     

Spectroscopy of collective excitations in interacting low-dimensional many-body systems using quench dynamics

We study the problem of rapid change of the interaction parameter (quench) in a many-body low-dimensional system. It is shown that, measuring the correlation functions after the quench, the information about a spectrum of collective excitations in a system can be obtained. This observation is supported by analysis of several integrable models and we argue that it is valid for nonintegrable models as well. Our conclusions are supplemented by performing exact numerical simulations on finite systems. We propose that measuring the power spectrum in a dynamically split 1D Bose-Einsten condensate into two coupled condensates can be used as an experimental test of our predictions.     

基于正交调制的激光测距系统和解模糊方法

提出一种基于正交调制的激光测距系统,该方案与传统的二次混频方法相比,提高了相位测量精度并简化了系统的硬件设计,针对距离测量过程中的距离模糊问题,提出了一种基于超定方程组的距离解模糊算法,避免了对最优解的搜索,最后使用2台K60激光测距仪和3台基于本方案的测距仪在精度为0.18 mm的国家标准基线上进行对比试验,结果显示,测距时间少于1.8 s,平均测量误差在2 mm以内,在60 m的量程内测距标准差在1 mm以内,验证了该方案相比较传统的方法具有更高的测量精度和速度。     

Combining Cubic Spline Interpolation and Fast Fourier Transform to Extend Measuring Range of Reflectometry

The reflectometry is a common method used to measure the thickness of thin films. Using a conventional method,its measurable range is limited due to the low resolution of the current spectrometer embedded in the reflectometer.We present a simple method, using cubic spline interpolation to resample the spectrum with a high resolution,to extend the measurable transparent film thickness. A large measuring range up to 385 m in optical thickness is achieved with the commonly used system. The numerical calculation and experimental results demonstrate that using the FFT method combined with cubic spline interpolation resampling in reflectrometry, a simple,easy-to-operate, economic measuring system can be achieved with high measuring accuracy and replicability.     

Roll angle measurement based on common path compensation principle

We propose a novel and compact roll angle displacement measurement method based on collimated laser position measurement and the common path compensation principle. The principles of the roll angle displacement measurement and the common path compensation are analyzed. The feasibility of the measurement method is verified, and the experimental results revealed a linear correlation coefficient of 0.99995 between the relative displacement of the measuring beam spot and the angular displacement. Furthermore, the theoretical measurement resolution is 0.013  arcsec. To test the performance of the compensation, a series of experiments, including one system stability experiment and two different environmental interference experiments, were performed. The experimental results indicated that the standard deviations of the measuring beam spot’s angular drift were improved by 82.6–87.2%. Thus, the stability of the system and the measurement resolution were improved.     

太阳能帆板平面度测量系统中光斑图像处理方法研究

太阳能帆板的平面度测量是卫星生产制造过程中的一个关键技术，现有的测量方法存在着精度差，效率低的问题。该文在基于实际工程课题的太阳能帆板平面度测量系统基础上，针对测量系统中光斑图像处理这一关键技术进行了详细的研究。对现有测量方法进行了比较与分析，介绍了测量系统的基本原理、图像采集系统设计过程中采取的主要措施、图像处理的具体方法与步骤和测量系统的基本组成。提出了一种新的快速滤波算法和光斑图像能量中心求取算法，大大提高了光斑图像能量中心的求取精度和实时性，提高了太阳能帆板平面度的测量精度。给出了光斑图像处理结果、静态测量重复性误差以及实际帆板的测量结果与分析，实验结果证明所采用的光斑图像处理方法可以满足对实际帆板测量精度的要求。