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  • 学术成果

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    Development of a deep-ultraviolet pulse laser source operating at 234?nm for direct cooling of Al+ ion clocks

    作者: 来源: 发布时间:2021年04月02日 14:42 点击次数:[]

    Development of a deep-ultraviolet pulse laser source operating at 234?nm for direct cooling of Al+ ion clocks

    Haoyu Wu, Zhaiqiong Zhang, Si Chen, Kexiong Sun, Jinghua Sun, Derryck T. Reid, Zehuang Lu, and Jie Zhang

    We report on the development of a 250-MHz 234 nm deep-ultraviolet pulse source based on a flexible wavelength-conversion scheme. The scheme is based on a frequency-doubled optical parametric oscillator (FD-OPO) together with a cascaded frequency conversion process. We use a χ(2) nonlinear envelope equation to guide the design of an intra-cavity OPO crystal, demonstrating a flexible broadband tunable feature and providing as high as watt-level of a frequency-doubled signal output centered at 850 nm, which is served as an input wave for the cascaded frequency conversion process. As much as 3.0 mW of an average power at 234 nm is obtained, with an rms power stability of better than 1% over 20 minutes. This deep-ultraviolet pulse laser source can be used for many applications in quantum optics and for direct laser cooling of Al+ ion clocks.

    期刊名: Optics Express

    /:29

    页码:11468-11478

    表时间:2021

    DOI: https://doi.org/10.1364/OE.421684

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