Influence on the Lifetime of ^(87)Rb Bose-Einstein Condensation for Far-Detuning Single-Frequency Lasers with Different Phase Noises  

作　　者：Peng Peng Liang-hui Huang Dong-hao Li Peng-jun Wang Zeng-ming Meng Jing Zhang 彭鹏;黄良辉;李东豪;王鹏军;孟增明;张靖(State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-electronics,Shanxi University;Collaborative Innovation Center of Extreme Optics,Shanxi University)

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-electronics,Shanxi University,Taiyuan 030006 [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006

出　　处：《Chinese Physics Letters》2018年第6期24-27,共4页中国物理快报（英文版）

基　　金：Supported by the National Key Research and Development Program of China under Grant Nos 2016YFA0301600 and 2016YFA0301602;the National Natural Science Foundation of China under Grant Nos 11234008,11474188 and 11704234;the Fund for Shanxi'1331 Project'Key Subjects Construction

摘　　要：We study the influence of the phase noises of far detuning single frequency lasers on the lifetime of Bose-Einstein condensation（BEC）of^（87）Rb in an optical dipole trap.As a comparison,we shine a continuous-wave singlefrequency Ti：sapphire laser,an external-cavity diode laser and a phase-locked diode laser on BEC.We measure the heating and lifetime of BEC in two different hyperfine states：｜F=2,m_F=2〉and｜F=1,m_F=1〉.Due to the narrow linewidth and small phase noise,the continuous-wave single-frequency Ti：sapphire laser has less influence on the lifetime of^（87）Rb BEC than the external-cavity diode laser.To reduce the phase noise of the external-cavity diode laser,we use an optical phase-locked loop for the external-cavity diode laser to be locked on a Ti：sapphire laser.The lifetime of BEC is increased when applfying the phase-Jocked diode laser in contrast with the external-cavity diode laser.We study the influence of the phase noises of far detuning single frequency lasers on the lifetime of Bose-Einstein condensation（BEC）of^（87）Rb in an optical dipole trap.As a comparison,we shine a continuous-wave singlefrequency Ti：sapphire laser,an external-cavity diode laser and a phase-locked diode laser on BEC.We measure the heating and lifetime of BEC in two different hyperfine states：｜F=2,m_F=2〉and｜F=1,m_F=1〉.Due to the narrow linewidth and small phase noise,the continuous-wave single-frequency Ti：sapphire laser has less influence on the lifetime of^（87）Rb BEC than the external-cavity diode laser.To reduce the phase noise of the external-cavity diode laser,we use an optical phase-locked loop for the external-cavity diode laser to be locked on a Ti：sapphire laser.The lifetime of BEC is increased when applfying the phase-Jocked diode laser in contrast with the external-cavity diode laser.

关 键 词：Influence on the Lifetime of Rb Bose-Einstein Condensation for Far-Detuning Single-Frequency Lasers with Different Phase Noises BEC 

分 类 号：TN248.1[电子电信—物理电子学] TN248