Fig. 1. Schematic of LD pumped 1061 nm/1064 nm dual-wavelength Nd∶YAG microchip laser

Fig. 2. Transmission curves of the thin film coated in the output end of the crystal. (a) Transmission curve in the range of 800--1100 nm; (b) transmission curve in the range of 1050--1075 nm

Fig. 3. Experimental results with crystal thickness of 0.8 mm. (a) Relative intensity of different wavelengths versus pump power; (b) output power versus pump power; (c) transverse mode of laser output light

Fig. 4. Output power versus time with crystal thickness of 0.8 mm

Fig. 5. Experimental results with crystal thickness of 1.2 mm. (a) Relative intensity of different wavelengths versus pump power; (b) output power versus pump power; (c) transverse mode of laser output light

Fig. 6. Output power versus time with crystal thickness of 1.2 mm

Fig. 7. Experimental results with crystal thickness of 2.5 mm. (a) Relative intensity of different wavelengths versus pump power; (b) output power versus pump power; (c) transverse mode of laser output light

Fig. 8. Output power versus time with crystal thickness of 2.5 mm

Fig. 9. Comparison of laser parameters under different crystal thicknesses. (a) Total output power versus pump power; (b) ratio of power of 1061 nm to total output power versus pump power