排序方式: 共有25条查询结果,搜索用时 156 毫秒
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从理论上分析了高功率双包层光纤激光器的受激布里渊散射效应,建立了考虑受激布里渊散射的光纤激光器速率方程,并采用打靶法对其求解,对数值求解算法进行了详尽的描述。通过比较不同的纤芯直径、光纤长度以及掺杂浓度的情况下输出激光功率极限值的不同,发现增大纤芯直径、减小光纤长度以及降低掺杂浓度可以有效地减少受激布里渊散射的影响。 相似文献
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电子束与等离子体互作用产生的宽带微波辐射 总被引:1,自引:0,他引:1
近年来,电子束与等离子体互作用产生高功率宽带微波辐射,由于其具有可调谐等优点而受到国际上普遍关注,这一互作用过程的辐射机制目前大致分为等离子体辐射和电子束辐射两大类,本文在简介了有关实验情况后,对几种辐射机制,包括逆Compton散射,孤立子场中群聚电子的辐射,非线性等离子体电流引起的辐射等作了评述。 相似文献
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Traditionally, the zitterbewegung (ZB) of the Dirac electron has just been studied at the level of quantum mechanics. Seeing the fact that an old interest in ZB has recently been rekindled by the investigations on spintronic, graphene, and superconducting systems, etc., this paper presents a quantum-field-theory investigation on ZB and obtains the conclusion that, the ZB of an electron arises from the influence of virtual electron-positron pairs (or vacuum fluctuations) on the electron. 相似文献
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Traditionally, the theory related to the spatial angular momentum has been studied
completely, while the investigation in the generator of Lorentz boost is inadequate.
This paper shows that the generator of Lorentz boost has a nontrivial physical
significance: it endows a charged system with an electric moment, and has an
important significance for the electrical manipulations of electron spin in
spintronics. An alternative treatment and interpretation for the traditional Darwin
term and spin--orbit coupling are given. 相似文献
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