温差电致冷在光电倍增管上的应用  

The application of thermoelectric cooling in photoelectric-multiplier

作　　者：王铁民[1] 林磊[1] 张建中[1] 葛晓丽[1] 

机构地区：[1]中国电子科技集团公司第十八研究所,天津300381

出　　处：《电源技术》2004年第9期571-574,共4页Chinese Journal of Power Sources

摘　　要：通过阐述光电倍增管探测性能与工作温度的关系,全面分析了引入致冷的必要性,此外详细叙述了水冷式光电倍增管致冷器的设计结构和工作原理,目的是通过使用温差电致冷器来降低光电倍增管阴极的温度,达到-30℃甚至更低。我们进行了多次单分子探测试验,结果表明,此法可以显著地降低阳极暗电流三个数量级以上,大幅度地提高光电倍增管的灵敏度。温差电致冷技术的引入,极大地改善了光电倍增管的探测性能,从而拓展了其应用领域。Through expounding the relationship between the survey performance of photoelectric and the operating temperature, the paper overall analyses the importance of using cooling technique. Moreover the paper has particularly described the design structure and working theory of water-cooled thermoelectric cooler for cooling photoelectric multiplier. It is the purpose that using thermoelectric cooler reduces the temperature of photoelectric multiplier to -30℃ or even more. We have made many single molecule survey tests, the test result indicates that the method can notably decrease the anode dark current more that three orders, and improve the sensitivity of photoelectric multiplier to a considerable degree. The application of thermoelectric cooling technique greatly improves the survey performance of photoelectric multiplier, and at the same time it expands the appliance area.

关 键 词：光电倍增管 温差电致冷器 漏电流 灵敏度 

分 类 号：TM913[电气工程—电力电子与电力传动]