排序方式: 共有24条查询结果,搜索用时 234 毫秒
1.
双模含失谐均匀加宽激光的不稳定性与混沌 总被引:7,自引:2,他引:5
研究了双模含失谐均匀加宽激光的不稳定与混沌行为,在不同失谐情况下给出了激光经Hopf分岔而出现洛仑茨不稳定的判据,它与模式跳变不稳定共同构成了激光的不稳定边界,并且模拟发现洛仑茨不稳定在一定条件下将触发激光模式的跳变,从而表现出双模所特有的非稳定现象。 相似文献
2.
用分子动力学方法研究了单个吸附原子在Ag(001)表面的自扩散现象,其中相互作用势采用了更适合于表面特性的表面嵌入势(SEAM势).观察到了丰富的扩散机制,包括简单交换机制、复杂交换机制、跳跃机制及一种新的渡越机制.提出了复杂交换机制的另一种竞争交换模型.对所有扩散机制的统计结果表明,吸附原子与表面原子间的交换扩散占主导.另外,由吸附原子扩散的Arrhenius行为及能量弛豫方法计算得到了简单交换机制的激活能为0.39eV,它小于跳跃机制的激活能0.47eV.
关键词: 相似文献
3.
4.
5.
It has remained an open problem to accurately compute the partition function of macroscopic systems since the establishment of statistical physics. A rapid method approaching this problem was presented and was strictly tested by molecular dynamic(MD) simulations on Ar atoms in both dense gaseous and liquid states. The outcomes from the method on the internal energy and the work of isothermal expansion(and therefore the free energy) are in good agreement with the MD simulations, suggesting the method would be immediately applied in vast areas. 相似文献
6.
7.
8.
In this paper the butterfly effects of single mode laser oscillation are studied. It is shown that the detuning between laser oscillation and atomic transition frequency leads to a decrease in second threshold, which makes the demonstration of chaos theory in experiment easy. 相似文献
9.
10.
The effect of transverse coupling in a photorefractive oscillator is studied. From the study the condition for stable optical patterns of multimode oscillation is given analytically and verified by numerical simulation. Under the stable condition, the period-doubling route to spatiotemporal chaos is observed. 相似文献