Fig. 1. Experimental setup of the diode-pumped Tm:YAP laser.

Fig. 2. Output powers of the Tm:YAP laser under different output mirror transmissions as a function of the absorbed pump power for a radius of curvature of (a) 100 mm, (b) 200 mm, (c) 300 mm, and (d) 400 mm. The results of a linear fit and the calculated slope efficiencies are presented in the graphs.

Fig. 3. Output spectra from the Tm:YAP laser in CW operation under different output mirror transmissions for a radius of curvature of (a) 100 mm, (b) 200 mm, (c) 300 mm, and (d) 400 mm.

Fig. 4. Output spectrum from the Tm:YAP laser for the output mirror transmission of 19.5% and the radius of curvature of 100 mm shown on a logarithmic scale.

Fig. 5. Measurement results of the Tm:YAP laser beam quality for the OC of 11.0% transmittance.

Fig. 6. Measurement results of the Tm:YAP laser beam quality for the OC of 43.7% transmittance.

Fig. 7. Diode-pumped Tm:YAP laser generated beam spatial distribution recorded for the output coupler transmittance of 11.0%.