Fig. 1. Raman laser system and phase noise measurement principle

Fig. 2. Raman laser beat signals at different resolutions and measurement ranges

Fig. 3. Phase noise of injection-locked Raman laser under master laser frequency locking

Fig. 4. Phase noise of injection-locked Raman laser at different scanning frequency ranges of master laser. (a) 10 MHz; (b) 50 MHz; (c)100 MHz; (d) 200 MHz

Fig. 5. Phase noise of injection-locked Raman laser at different PZT frequencies of master laser. (a) 10 Hz; (b) 100 Hz; (c) 200 Hz; (d) 500 Hz; (e) 1 kHz; (f) 10 kHz