Fig. 1. Experimental setup for injection-locked ring laser

Fig. 2. Spectra of injection locking experiment of seed laser. (a) Spectrum of seed laser (1342.11 nm); (b) spectrum of ring laser (1342.15 nm); (c) unlocked spectrum (1342.11 nm and 1342.15 nm); (d) injection-locked spectrum (1342.11 nm)

Fig. 3. Laser frequency property

Fig. 4. Output powervarying with different seed power of injection-locked and unlocked laser

Fig. 5. Output power varying with different pump power of injection-locked and unlocked laser

Fig. 6. Tuning curves of laser wavelength

Fig. 7. Power stability of the laser