Fig. 1. Overall experimental scheme. (a) Energy level diagram of GSA and ESA dual-wavelength pumped scheme；(b) experimental arrangement for GSA and ESA dual-wavelength pumped Tm∶YAP laser

Fig. 2. Curves of Tm∶YAP crystal absorptivity of 785 nm and 1470 nm pump light with pump powers

Fig. 3. Typical laser emission spectra measured at maximum output power

Fig. 4. Curves of 2.32.5 μm laser output powers with incident 785 nm pump powers

Fig. 5. Curves of 2.32.5 μm laser output powers with incident 1470 nm pump powers under different given incident 785 nm pump powers. (a) OC1 (T＝1.5%); (b) OC2 (T＝2.8%); (c) OC3 (T＝0.5%)

Fig. 6. Curves of 2.32.5 μm laser output powers with incident 785 nm pump power under different given incident 1470 nm pump powers. (a) OC1 (T＝1.5%); (b) OC2 (T＝2.8%); (c) OC3 (T＝0.5%)

Fig. 7. Dependence of output powers on related parameters. (a) Dependence of output powers on the cooling temperature of laser crystal; (b) dependence of output powers on the length of resonator

Fig. 8. Intensity distribution of output laser spot