Orthogonal linear polarized lasers(III) --Applications in self-sensing

In this paper, the applications of orthogonal linear polarized lasers in self-sensing are reviewed. The properties for such a laser include the production of a new frequency in one longitudinal mode spacing, the tuning of frequency difference, the change of polarization states as cavity tuning, the control of mode competition intensity, the optical feedback, and so on. The orthogonal polarized lasers have been used as a laser nanometer ruler based on competition between two polarized lights in a HeNe laser and as a displacement measurement tool based on the optical feedback in the orthogonal polarized lasers. They are also used in the phase retardation measurement of a waveplate, the angle measurement, the vibration measurement, the pressure/force measurement, the weak magnetic field measurement, and so on. The structures of these new devices are simple and compact with the great advantages of high resolution and high accuracy. Some of these devices can trace to the source of the laser wavelength. The nanometer laser ruler is an example whose measurement range is 12 mm, resolution is 79 nm and linearity is less than 5×10^-5. The repeatability of the phase retardation measuring system of waveplate can reach 3′.     

太阳引力场中的二阶后牛顿光线方程

从含有14个后牛顿参数的太阳度规张量出发，采用一套迭代的方法，推导出了太阳单参考系下的二阶后牛顿光线方程；当其中所含的参数取特定的值时，得到广义相对论中的二阶后牛顿光线方程；当忽略高于1／c^4的项时，二阶后牛顿光线方程退回到经典的一阶后牛顿光线方程．     

一种水溶性温敏共聚高分子的制备及溶液性质研究

以N-异丙基丙烯酰胺和N-异丙基甲基丙烯酰胺为共聚单体，合成了一种在水溶液中具有与人体正常体温37℃一致的相转变温度的共聚化合物．利用动态光散射技术研究了这一特殊共聚物在水溶液中高分子链构象行为随温度的变化情况．     

White organic light-emitting devices using Zn（BTZ）2 doped with Rubrene as emitting layer

Zn(BTZ)2 was synthesized from the complex reaction between zinc acetate dihydrate and 2-(2-hydroxyphenyl) benzothiazolate. Then Zn(BTZ)2 was used as main light-emitting material doped with different amounts of fluorescent dye Rubrene and fabricated a series of white organic light emitting devices. The configurations were as follows: ITO/PVK:TPD/Zn(BTZ)2:Rubrene/Al. The doping concentration of Rubrene in Zn(BTZ)2 was 1.2%, 0.12%, 0.08% and 0.05%, respectively. According to the EL spectra and CIE coordinates of the above devices, the optimum doping concentration (0.05%, weight percent) had been determined. The steady and bright white light emitting of the device with 0.05% doping concentration had been obtained, and the white emission covered a wide range of driving voltage (10--22.5 V). The CIE coordinates were (x=0.341, y=0.334) at the driving voltage of 20 V, which was very close to the equi-energy point (x=0.333, y=0.333), and the corresponding luminance and external quantum efficiency were 4048 Cd/m^2 and 0.63% (4.05 Cd/A), respectively. Lastly, we also discussed the emitting mechanisms of the material and the devices.     

消光比自动测试系统的系统误差分析

论述了消光比测试原理及消光比自动测试系统的设计思想，分析了系统误差产生的原因，提出了消除及减小系统误差的方法并对实验结果进行了分析。     

偏振光源形貌对空气隙型检偏棱镜光强透射比的影响

探讨了单色线偏振光源的形状、尺寸和取向对检偏棱镜光强透射比的影响．由于检偏棱镜结构误差的存在，使得棱镜空气隙间光的干涉条件发生了改变，引起透射光强分布的变化，入射光束尺寸越大，光强透射比变化就越稳定，圆形光源入射时，光强透射比对空间入射角和入射点的变化比线光源稳定，偏振线光源入射时，光强透射比随其取向的不同敏感性不一样．     

结构光和显微术相结合实现光学层析

针对共焦测量中单点扫描速度慢、机构复杂、光能利用率低的问题，介绍了一种利用结构光和共焦显微术相结合来实现多光束测量的新方法．通过改装显微照明光路，投射一结构光到被测物体上，获得了物体的层析像与普通显微镜成像的叠加像．该叠加像经过解码算法，实现了非零频分量的层析成像，并利用互强度理论，对该层析显微镜的层析能力和解码算法从理论上给出了表达式．数值模拟表明，该系统与针孔阵列、微透镜阵列和孔径相关相比，不仅简便可行，而且提高了速度，光能利用率也得到了明显的改善．     

关于高斯光束复参数q满足ABCD定律的证明

假设高斯光束复参数满足ABCD定律,由此可根据激光理论和Collins衍射积分求解出射高斯光束的复参数表达,结果与实验相符。这就证明假设成立,即证明高斯光束复参数满足ABCD定律。文章还同时给出关于这个问题的Fourier衍射积分证明方法,佐证了文中证明是正确的。     

达旦黄-OP体系共振瑞利散射法测定蛋白质

研究了达旦黄与蛋白质的结合反应．在乳化剂OP存在下及pH1．6的酸性介质中，蛋白质与达旦黄形成复合物，使最大波长460nm的共振光散射光谱得到加强，根据其共振光散射的增强程度，可用于蛋白质的定量测定．乳化剂OP的加入，使灵敏度提高1．7倍．牛血清白蛋白、人血清白蛋白、卵白蛋白、γ-球蛋白的线性范围分别为0．03～1．0、0．04～1．1、0．05～1．4、0．05～1．3mg／L，检测限分别为13．1、13．9、17．1、16．2μg／L．用于人血清、牛奶、豆浆、尿液中蛋白质的测定，结果与经典的考马斯亮蓝法一致．     

人类对光之本性认识深化历程的考察

对光本性的认识贯穿于物理学光学学科发展的整个过程．时至今日，光本性问题在光学这个古老而又常新和充满希望的学科中仍占有重要位置．考察人们对光本性认识深化的历程，对于光学的进一步发展意义重大．