[1] Du Y N, Chen C, Qin L et al. Narrow linewidth external cavity semiconductor laser based on silicon photonic chip[J]. Chinese Optics, 12, 229-241(2019).

[2] Ludlow A D, Huang X, Notcutt M et al. Compact, thermal-noise-limited optical cavity for diode laser stabilization at 1×10 -15[J]. Optics Letters, 32, 641-643(2007).

[3] Zhang W, Stern L, Carlson D et al. Ultranarrow linewidth photonic-atomic laser[J]. Laser & Photonics Reviews, 14, 1900293(2020).

[4] Peng Y, Shi Q P, Huo H et al. Realization of narrow linewidth property based on ultra-stable cavity in precision optics teaching[J]. Laser & Optoelectronics Progress, 54, 081402(2017).

[5] Wang S M, Shang J J, Cui K F et al. Laser frequency drift control based on refrigeration Fabry-Pérot cavity[J]. Laser & Optoelectronics Progress, 54, 031401(2017).

[6] Li H, Abraham N B. Power spectrum of frequency noise of semiconductor lasers with optical feedback from a high-finesse resonator[J]. Applied Physics Letters, 53, 2257-2259(1988).

[7] Zhao Y, Li Y, Wang Q et al. 100-Hz linewidth diode laser with external optical feedback[J]. IEEE Photonics Technology Letters, 24, 1795-1798(2012).

[8] Tran M A, Huang D N, Bowers J E. Tutorial on narrow linewidth tunable semiconductor lasers using Si/III-V heterogeneous integration[J]. APL Photonics, 4, 111101(2019).