四分之一波片补偿热退偏损耗实验研究

Experiment Investigation of Thermally Induced Depolarization Loss Compensating by Using Quarter-wave Plate

对四分之一波片补偿腔内退热偏损耗进行了实验研究.在泵浦电流为20 A条件下,带有四分之一波片补偿作用的侧泵Nd:YAG激光谐振腔输出2.67 W 1 064 nm激光输出,其腔内光束退偏率远小于没有腔内补偿的退片率.研究结果证明腔内四分之一波片补偿作用对于降低腔内光束退偏损耗、提升激光功率具有较好的效果.

Starting from the practical situations in the construction of e-campus of local colleges,this paper has proposed the design thought and overall structure of private cloud platform of colleges.Focus is given to the description of technical key points of infrastructure cloud construction,virtual resource pool design,cloud platform network design and storage design.With Jiaying University as an example,this paper has made primary discussion on the application and practice of local college cloud platform,and solved some concrete problems in the design of local college cloud platform.Compensation of thermally induced depolarization by using Quarter-wave Plate is experimentally investigated.2.67 W 1064 nm laser output for a pump current of 20 A is obtained from the side-pumped Nd： YAG laser with a single intracavity quarter-wave plate.The intracavity depolarization rate of the laser with a intracavity quarter-wave plate is obviously less than that without intracavity quarter-wave plate.The investigation shows that the technique of intracavity quarter-wave plate compensating thermally induced depolarization loss can decrease the intracavity depolarization loss and increase the output power.