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41.
提出了基于相干波面光强分布的静态干涉图数字处理的新方法 ,即在CQG Ⅱ型激光数字波面干涉仪上通过分别微调参考镜和被测镜的倾斜量 ,在CCD探测器上获得形成静态干涉图的两幅相干波面光强分布图 ,利用这两幅光强分布图与它们所形成的干涉图 ,可高精度地完成静态干涉图的数字分析。利用相干原理 ,给出了实现该方法的基本过程 ,并编程实现了该数字分析 ,获得了实验测量结果。通过与相移测量结果相比较 ,验证该方法对口径为 60mm的平面有望达到的测量精度。 相似文献
42.
The results of the analysis of the stability of stationary solutions of wave equations discribing a behavior of the nonlinear Fabry-Perot interferometer with a saturated paramagnetic filling are presented in this paper. The cases when paramagnetic medium is characterized by a homogeneously and nonhomogeneously broadened line of the magnetic resonance have been considered. Areas of unstable behavior of these characteristics of the resonance structure have been found. 相似文献
43.
44.
介绍了光纤Mach-Zehnder(MZ)干涉仪系统的结构.给出了光纤Mach-Zehnder干涉仪系统中信号光与参考光的干涉原理以及影响干涉光强的因素.同时也分析了光纤耦合器的交叉耦合,另外也给出了PZT的作用.阐述了光纤偏振控制器的结构、工作原理及其对光纤Mach-Zehnder干涉仪系统传感臂偏振态的控制,最后给出了光纤Mach-Zehnder干涉仪系统的应用. 相似文献
45.
46.
根据薄膜干涉原理分析了迈克耳孙干涉仪实验中的等倾干涉现象,得到了接收屏上的光强分布与入射角的关系.采用计算机模拟的方法,用Matlab编写程序,运行后得到了迈克耳孙干涉仪等倾干涉环的图样. 相似文献
47.
对多模干涉器的模场传播常数和光场分布进行了精确计算,并与解析近似计算结果进行了比较,发现在弱限制条件下出现输出光能量降低的真正原因:一方面是波导支持的导模数量较少,导致高频成分丢失,自映像质量下降,形成大的弥散斑,造成输出耦合损失;另一方面是由于高频辐射模直接辐射带走了一部分能量。该分析结果纠正了传统的模糊观念。 相似文献
48.
Hao Tian Zhongxiang Zhou Minghui Zhang Dajun Liu Lei Li 《Optics Communications》2008,281(21):5420-5422
The Kerr (quadratic electro-optic) property of K0.95Li0.05Ta0.60Nb0.40O3 was measured by using an automated scanning Mach–Zehnder interferometer. K0.95Li0.05Ta0.60Nb0.40O3 has large Kerr effect with R11 = 7.2 × 10−16 m2/V2 and R12 = −1.2 × 10−16 m2/V2 at 632.8 nm near its phase-transition temperature. The dielectric and Kerr properties as function of temperature were also investigated, thus the quadratic polarization-optic coefficients were calculated. The values of g11 and g12 are 0.083 m4/C2 and −0.014 m4/C2, respectively, and do not depend on temperature within the measurement accuracy of 5%. 相似文献
49.
The curious dual nature of the neutron, sometimes a particle, sometimes a wave, is wonderfully manifested in the various non-local
interference and quantum contextuality effects observed in neutron interferometry. Non-classical states may become useful
for novel fundamental and solid state research. Here we discuss unavoidable quantum losses as they appear in neutron phase-echo
and spin rotation experiments and we show how entanglement effects in a single particle system demonstrate quantum contextuality.
In all cases of interactions, parasitic beams are produced which cannot be recombined completely with the original beam. This
means that a complete reconstruction of the original state would, in principle, be impossible which causes a kind of intrinsic
irreversibility. Even small interaction potentials can have huge effects when they are applied in quantum Zeno-like experiments.
Recently, it has been shown that an entanglement between external and internal degrees of freedom exists even in single particle
systems. This contextuality phenomenon also shows that a quantum system carries much more information than usually extracted.
The path towards advanced neutron quantum optics will be discussed.
相似文献
50.
The electro-optic (E-O) properties of the slab polymer waveguide induced by electric poling have been studied experimentally. The thin film waveguide was prepared by a synthesized polymer polypelargonamide and poled by applying voltage between the electrodes. I–V curves and E-O characteristics of the polymer films were in-situ measured during poling. In order to evaluate the molecular dipole orientation under the poling field, the absorption spectra of this film was observed by FTIR. The E-O performance of the polymer slab film was also estimated by the Mach–Zehnder interferometer. 相似文献