Generation of Continuous-Wave 194 nm Laser for Mercury Ion Optical Frequency Standard  

作　　者：邹宏新 伍越 陈国柱 沈咏 刘曲 

机构地区：[1]Department of Physics,The National University of Defense Technology

出　　处：《Chinese Physics Letters》2015年第5期73-77,共5页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 91436103 and 11204374

摘　　要：A 194-nm cw laser is an essential part in the mercury ion optical frequency standard. We report the generation of over 2mW continuous-wave radiation at 194nm in a beta barium borate crystal using a simple sum frequency mixing （SFM） system. One source beams at 718nm is resonantly enhanced with a cavity and the other at 266mn makes a single pass. Considering the walk-off effect in SFM, the source beam waists are designed to be elliptical, thus the conversion efficiency can be promoted. The 266-nm beam produced by frequency doubling of 532-nm laser is shaped close to the diffraction limit to achieve better mode matching.A 194-nm cw laser is an essential part in the mercury ion optical frequency standard. We report the generation of over 2mW continuous-wave radiation at 194nm in a beta barium borate crystal using a simple sum frequency mixing （SFM） system. One source beams at 718nm is resonantly enhanced with a cavity and the other at 266mn makes a single pass. Considering the walk-off effect in SFM, the source beam waists are designed to be elliptical, thus the conversion efficiency can be promoted. The 266-nm beam produced by frequency doubling of 532-nm laser is shaped close to the diffraction limit to achieve better mode matching.

关 键 词：Generation of Continuous-Wave 194 nm Laser for Mercury Ion Optical Frequency Standard BBO SFM 

分 类 号：TN24[电子电信—物理电子学]