Fig. 1. Threshold current of different reflectivity of antireflection film

Fig. 2. Slope efficiency of different reflectivity of antireflection film

Fig. 3. AFM test results of TiO2 thin film

Fig. 4. AFM test results of Al2O3 thin film

Fig. 5. (a) Reflectivity curves of antireflection film; (b) reflectivity curves of high-reflective film

Fig. 6. Continuous power test results of the 808 nm laser

Fig. 7. COD test results of the facet. (a) Before optimization; (b) after optimization