碱土金属原子激光的共振辐射俘获效应  

Resonance radiation trapping in alkaline-earth metal atomic lasers

作　　者：毛邦宁[1] 潘佰良[1] 陈钢[1] 夏婷婷[1] 

机构地区：[1]浙江大学物理系,杭州310027

出　　处：《物理学报》2006年第4期1793-1797,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10374081;10574111);国家高技术研究发展计划(批准号:2004AA84TS04)资助的课题.

摘　　要：根据Holstein理论研究了碱土金属原子激光中的共振辐射俘获效应,分别计算了Ca,Sr和Ba蒸气激光在不同半径时产生共振辐射俘获效应的阈值温度、基态粒子数密度和共振能级的有效寿命.发现计算得到的阈值温度与实验报道的开始产生激光的工作温度一致,表明共振辐射俘获效应是这类激光形成粒子数反转的一个重要机制.The resonance radiation trapping in alkaline-earth metal atomic lasers were investigated according to Holstein＇s theory. The threshold temperature, ground-state density and resonant level effective lifetime of the resonance radiation trapping were calculated for Ca, Sr, and Ba atomic vapor lasers with different tube radii. The calculated threshold temperature is found to be in good agreement with the experimental laser-starting temperature, which indicates the resonance radiation trapping is a significant factor in establishing the population inversion of the resonance to metastable transition lasers.

关 键 词：共振辐射俘获 碱土金属原子激光 阈值温度 Holstein理论 

分 类 号：O432.12[机械工程—光学工程]