【摘要】 <正> 一、引言 在用于激光加热等离子体研究的高功率激光系统中,为了防止从靶面及等离子体反馈回激光放大器序列的反向激光被进一步放大到足以毁坏光路中光学元件的功率密度,已经采用相应孔径的普克耳斯盒电光开关和磁光开关等光学隔离器(也称为隔光器),达到良好的效果。进一步扩大隔光器的通光孔径时,我们为六束高功率激光装置LGJ—Ⅱ研制成60毫米孔径的菲涅耳菱体隔光器,作为末级隔光器。本文描述有关的实验结果。更多还原

【Abstract】 A Fresnel rhomb combined with a 1.06 μm multilayer dielectric film polarizer forms an isolator with an effective diameter of 60 mm. An extinction coefficient of over 102 has been obtained. It is shown in the experiments that the design of high power laser is simplified and their operation is facilitated by using this isolator.更多还原