Fig. 1. Schematic of experimental setup of continuous-wave single-frequency dual-wavelength laser

Fig. 2. Output power and longitudinal modes of dual-wavelength laser. (a) Output power versus temperature of LBO crystal; (b) transmittance curve of scanning F-P interferometer

Fig. 3. Measured intensity noise (line) and phase noise (scatter) of output lasers with different wavelengths. (a)(c) 1.06 μm; (b)(d) 532 nm

Fig. 4. Measured intensity and phase noises versus temperature of LBO crystal for lasers with different wavelengths when analysis frequencies are 1 MHz and 2 MHz. (a) 1.06 μm; (b) 532 nm

Fig. 5. Frequency drift of 1.06 μm laser. (a) Free running; (b) after frequency stabilization

Fig. 6. Power fluctuations of output lasers with different wavelengths within 5 hours. (a) 1.06 μm; (b) 532 nm

Fig. 7. Beam qualities of output lasers with different wavelengths. (a) 1.06 μm; (b) 532 nm