共查询到19条相似文献,搜索用时 62 毫秒
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迈克耳孙干涉仪不仅可以用来研究物理学的基本问题,而且能够用于精密测量,比如引力波信号的测量.因此,构建高灵敏度的迈克耳孙干涉仪是实现微弱信号测量的关键.目前,人们利用压缩态可以降低迈克耳孙干涉仪的噪声;通过光学四波混频过程能够放大马赫·曾德尔干涉仪中的相位信号,从而提高干涉仪的信噪比和灵敏度.本文研究了一种用于高灵敏度相位测量的量子迈克耳孙干涉仪.在迈克耳孙干涉仪中,利用非简并光学参量放大器取代干涉仪中的线性光学分束器;并且将压缩态注入干涉仪的真空通道,可以得到高信噪比和高灵敏度的干涉仪.由于存在不可避免的光学损耗,分析了迈克耳孙干涉仪内部和外部的损耗对相位测量灵敏度的影响.通过理论计算研究了干涉仪的相位测量灵敏度随系统参数的变化关系,得到了高灵敏度的相位测量量子迈克耳孙干涉仪的实现条件,为用于精密测量的干涉仪的设计提供了直接参考. 相似文献
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根据迈克耳孙干涉仪的机械结构,分析了仪器误差的5个分量,确定了迈克耳孙干涉仪的仪器误差,分析了迈克耳孙干涉仪由于调节不当而产生的误差,提出了减小这类误差的方法,分析了振动对光波波长测量的影响,设计出了一种简易防震台,能明显减小震动的影响. 相似文献
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本文主要介绍了法布里-珀罗干涉仪和迈克耳孙干涉仪的基本特性和工作原理。在此基础上,详述了在光学频率标准的研制过程中,使用高稳定度、高精细度的法布里-珀罗干涉仪获取超稳的本地振荡激光的方法;以及利用基于光纤迈克耳孙干涉仪的光纤相位噪声提取和抑制技术,实现光学频率标准的远程精密传输的方法。本文内容有助于加深学生对法布里-珀罗干涉仪和迈克耳孙干涉仪基础知识的理解,了解科学研究发展前沿,激发学生的学习兴趣和科研热情。 相似文献
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迈克耳孙干涉仪测量He-Ne激光波长的最佳测量区间申文高(湖南大学物理系410012)用迈克耳孙于涉仪的点光源非定域干涉测量He—Ne激光波长时,当两反射镜间隔之差很小时或很大时都会带来误差,误差值一般偏大.木文通过分析,给出了最佳的测量区间.测波长... 相似文献
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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
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Single-mode selection with Michelson selectors in cw standing-wave dye lasers is analyzed. The application of single and double Michelson mode selectors for compensation of spatial hole burning effects is described in detail. Upper limits for the pumping are considered. It is shown that with spatial hole burning compensation, even the single Michelson selector provides sufficient selectivity for high power single-mode operation in linear cavities. 相似文献
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V. De Cosmo M. Petrizzelli 《International Journal of Infrared and Millimeter Waves》1983,4(4):541-548
The principle of Michelson spatial interferometer and considerations relating to its use in the FIR Astronomy are presented. A model of Michelson interferometer is proposed. 相似文献
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In a Young–Michelson tandem interferometer a Michelson interferometer is illuminated through a pair of Young slits. The pattern produced by this set-up is analyzed theoretically. The consequences of small misalignments and uncompensated arms in the Michelson interferometer are studied. The effects of the spatial and temporal partial coherence of the source are also explored. Experimental results using a laser source are shown to be in good agreement with the predicted theoretical calculations. 相似文献
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We propose an integrated fiber Michelson interferometer based on a poled hollow twin-core fiber. The Michelson interferometer can be used as an electro-optic modulator by thermal poling one core of the twin-core fiber and introducing second-order nonlinearity in the fiber. The proposed fiber Michelson interferometer is experimentally demonstrated under driving voltages at the frequency range of 149 to 1000 Hz. The half-wave voltage of the poled fiber is 135 V, and the effective second-order nonlinear coefficient χ2 is 1.23 pm/V. 相似文献
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We report and demonstrate an optical refractometer based on a compact fiber Michelson interferometer. The Michelson interferometer is composed of an asymmetrical twin-core fiber containing a central core and a side core. By chemically etching a segment of the twin-core fiber until the side core is exposed, the effective index of the side core in the etched region is sensitive to the environmental refractive index, which leads to a shift of the transmission spectrum of the Michelson interferometer. The experimental results show that such a device has a refractive index resolution of more than 800 nm/refractive index unit in the range of 1.34-1.37. 相似文献
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简述了偏振风成像干涉仪(PAMI)探测高层大气风场的基本原理;研究得出了多波长探测时偏振风成像干涉仪干涉强度、仪器调制度与位相延迟片的延迟位相之间的理论表达式;得出了偏振风成像干涉仪的干涉强度和仪器调制度受所探测谱线波长调制的重要结论;采用计算机模拟分析了使用偏振风成像干涉仪(设计谱线为高层大气氧原子跃迁时辐射的630nm的极光谱线)探测高层大气时各目标谱线的干涉强度和仪器调制度,给出了干涉强度和仪器调制度与探测谱线波长之间的关系,得出了732nm的极光谱线不适合用作探测目标的结论. 本文为高层大气风场探
关键词:
高层大气风场探测
偏振风成像干涉仪
调制度
多波长探测 相似文献