Abstract
The external-cavity diode laser is advantageous in terms of low noise, high side-mode suppression ratio, high temperature stability, simple structure, and low cost, which has been the preferred scheme to realize wide-tuning and narrow-linewidth characteristics. Thus, it has been widely used in optical communication, lidar, environmental monitoring, spectral analysis, optical coherence tomography, and other frontier fields. Herein, we introduce the technical scheme and review the development status of wide-tuning and narrow-linewidth external-cavity diode lasers in detail. Primarily, the structure, working principles, and performance characteristics of external-cavity diode lasers are deeply analyzed according to different structures. The structural characteristics, key technologies, optical performance and application fields of state-of-the-art studies in recent years are discussed. Finally, the challenges and potential development prospects of wide-tuning and narrow-linewidth external-cavity diode lasers are analyzed and discussed.
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Acknowledgements
This work was supported by National Science and Technology Major Project of China (Grant Nos. 2018YFB-0504600, 2018YFB0504603), National Natural Science Foundation of China (Grant Nos. 62090051, 62090052, 62090054, 11874353, 61935009, 61934003, 61904179, 61727822, 61805236, 62004194), Science and Technology Development Project of Jilin Province (Grant Nos. 20200401069GX, 20200401062GX, 20200501006GX, 20200501007GX, 20200501008GX), Key R&D Program of Changchun (Grant No. 21ZGG13), Special Scientific Research Project of Academician Innovation Platform in Hainan Province (Grant No. YSPTZX202034), and “Lingyan” Research Program of Zhejiang Province (Grant No. 2022C01108).
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Cui, Q., Lei, Y., Chen, Y. et al. Advances in wide-tuning and narrow-linewidth external-cavity diode lasers. Sci. China Inf. Sci. 65, 181401 (2022). https://doi.org/10.1007/s11432-021-3454-7
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DOI: https://doi.org/10.1007/s11432-021-3454-7