To test whether the beetles use light polarization , rather than the position of the moon , to maintain a steady bearing , the researchers made sure the insects could not see the moon 测试是否甲虫使用光的偏振,并非月亮的位置,维持一个稳定的方向,研究员确定昆虫不可能看见月亮。
In the section 1 , we have introduced the background and the recent advance of the flattened gaussian beam ; in the section 2 , for the first time , we have calculated the type - i and type - ii shg conversion efficiency and simulated curves versus the crystal length , the pumping light polarization rate , the order of the flattened gaussian beam and the pumped power intensity , we obtain ed that the highest efficiency was influenced by the order and the polarization rate of the pumped flattened gaussian beam 从三波耦合方程及clbo晶体的光学特性出发,讨论了以平顶高斯光束入射时稳态的三波耦合方程的大信号倍频解(包括类及类相位匹配的倍频解) 。计算了其在clbo晶体上的倍频转换效率与晶体长度,基波偏振分量比,基波阶数及泵浦波强度之间的相互影响关系曲线。得出影响平顶高斯光束的最高转换效率的因素是基波的阶数n和泵浦波的偏振分量比d 。