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    Single step zero-thermal-expansion temperature measurement of optical reference cavities

    作者: 来源: 发布时间:2021年09月14日 14:52 点击次数:[]

    Single step zero-thermal-expansion temperature measurement of optical reference cavities


    Zhiyuan Wang, Yanxia Ye*, Jialu Chang, Jingxuan Zhang, Yunlong Sun, Leilei He,  Qiyue Wu, Zehuang Lu and Jie Zhang


    Abstract: State-of-the-art laser frequency stability has been pushed to the 10?17 level. The laser reference cavity is typically nested in a multi-layer thermal enclosure to increase vacuum thermal time constant and thermally controlled at the zero-thermal-expansion temperature to reduce the external temperature ?uctuation e?ect. It is rather time consuming to accurately determine the zero-thermal-expansion temperature for a large thermal time constant system. Here we develop a fast method for measuring the zero-thermal-expansion temperature of the cavity by relying on just one single temperature scan. We frst develop a theoretical model to predict the performance of the laser locked to the reference cavity, and then construct an evaluation system for verification of the model. The zero-thermal-expansion temperature of a 30-cm cavity is measured to be 4.3±0.5 °C. The fast and high precision method for determining the zero-thermal-expansion temperature will be valuable in improving long-term frequency stabilities of cavity stabilized lasers.


    期刊名:Optics Express

    /卷:29(19)

    页码:30567

    发表时间:2021

    DOIhttps://doi.org/10.1364/OE.436112


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