supported by the National Natural Science Foundation of China(61377066);the Fundamental Research Funds for the Central Universities(CDJZR12125502,106112013CDJZR120002,and 106112013CDJZR160006)
Ultra-narrow linewidth laser with several hundred hertz at room temperature has attracted a great deal of attention in recent years and played a critical role in both optical sensing and communication fields. In this ...