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Orthogonally linear polarized lasers(Ⅰ)--principle and devices 总被引:1,自引:0,他引:1
Two kinds of orthogonally polarized lasers, i.e. Zeeman dual-frequency lasers and four-frequency ring lasers (laser gyros) have been developed since the invention of lasers, in which circularly polarized lights oscillate. This paper summarizes recent progress of the study on orthogonally linear polarized lasers with the standing wave cavity. Firstly, the expression of producing orthogonally linear polarized lights in standing wave cavity, i.e. laser frequency splitting, is given. Almost all the birefringence effects made in laser cavity are used to produce orthogonally linear polarized lights. The effect includes quartz crystal birefringence effect, calcite birefringence effect,stress (photo-elastic) birefringence effect and electro-optical birefringence effect. Secondly, several physical phenomena of orthogonally linear polarized lasers are discovered such as aberrance of frequency splitting curves caused by optical activity of quartz crystal, order-passing of longitudinal modes with frequency splitting and strong modes competition. Finally, because the traditional Zeeman dual frequency laser cannot output frequency difference larger than 3 MHz, the approaches of obtaining larger frequency difference are studied. The sequential results, several kinds of orthogonally polarized lasers, are described, such as birefringence dual frequency lasers outputting a frequency difference from 40 MHz to hundreds of megahertz, birefringence-Zeeman dual frequency lasers outputting a frequency difference from 1 MHz to hundreds of megahertz, the LD pumped YAG birefringence dual frequency laser outputting frequency difference of several gigahertz, and the lasers whose longitudinal mode spacing is c/4L instead of c/2L. 相似文献
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作者通过实验发现排球防守队员存在一侧优势现象,并采用综合法进行研究,研究设计了“利优战术”.“利优战术”是在边跟进“防守阵形基础上的个人防守战术,即是以其5号位队员为出发点而设计的.经过验证,结果表明在充分利用一侧优势的前提下,结合攻防结构规律而设计的.“利优战术”在实际比赛中能获得较好的防守效果.建议在我国各级男女排球队进行试用,同时对整体利用一侧优势组成一个利用一侧优势的防守体系进行更深一步的探讨. 相似文献
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由塞曼效应实验结果去确定原子的总角动量量子数J值和朗德因子g值,近而去确定原子总轨道角动量量子数L和总自旋量子数S的数值.此方法的运用,对知识巩固和加深的同时,训练学生由实验结果得到理论结论,实现物理学理论指导实践、实践反作用理论的宗旨.这无疑对增强学生的创新能力有巨大的帮助. 相似文献
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以多电子原子塞曼哈密顿的球张量形式为基础,借助单体和双体算符在Slater表象中的矩阵元公式,利用不可约张量理论和角动量耦合理论推导出了包含磁场二次项的塞曼哈密顿在|3PJMJ〉表象中矩阵元的一般表达式。以氦原子1s4p组态为例,计算了氦原子43P态的精细结构裂距,并绘出了能级分裂图。 相似文献
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在通过塞曼效应实验测量电子的荷质比e/m时,如果将观测汞5461A谱线在磁场中分裂的π分量改为观测σ分量,可大大提高测量精度,并简化实验操作。 相似文献
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塞曼对线光谱在磁场中发生分裂效应的实验研究 总被引:2,自引:0,他引:2
介绍了塞曼的生平和他对物理学发展的主要贡献 ,着重回顾了他对线光谱在磁场中发生分裂效应 (即塞曼效应 )的研究历程 ,以及塞曼的成功带给我们的有益启示 . 相似文献
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通过外加Zeeman磁场在d波超导中,在平均场近似下,自洽求解d波超导能隙和Zeeman能量的方程,研究了Zeeman效应对d波超导序参数和热力学势的影响,阐述了磁性与超导共存条件. 相似文献
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