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%.
Radius of Curvature (mm) | Transmission of OC (%) | Maximum Output Power (W) | Slope Efficiency (%) | Optical-to-Optical Efficiency (%) | Laser Wavelength (nm) |
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100 | 8.3 | 6.35 | 60.1 | 46.5 | 1988.23 | 19.5 | 5.08 | 54.8 | 37.2 | 1937.68; 1985.70 | 30.2 | 3.95 | 48.0 | 28.9 | 1936.83 | 40.5 | 2.85 | 40.3 | 20.8 | 1936.20 | 200 | 8.4 | 6.15 | 57.6 | 45.0 | 1987.61 | 17.4 | 4.87 | 52.8 | 35.6 | 1986.76 | 20.0 | 4.75 | 50.2 | 34.7 | 1937.68 | 31.0 | 3.76 | 47.0 | 27.5 | 1936.78 | 40.4 | 2.79 | 41.6 | 20.4 | 1935.87 | 300 | 10.8 | 6.22 | 60.4 | 45.5 | 1987.06 | 24.1 | 4.95 | 58.9 | 36.2 | 1937.38 | 31.6 | 3.90 | 51.7 | 28.5 | 1936.72 | 43.5 | 2.45 | 41.3 | 17.9 | 1935.95 | 400 | 11.0 | 5.96 | 57.7 | 43.6 | 1987.03 | 24.1 | 4.61 | 52.8 | 33.7 | 1937.96 | 31.9 | 3.88 | 50.5 | 28.4 | 1936.60 | 43.7 | 2.73 | 44.6 | 20.0 | 1934.95 |
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Table 1. Experimental Results of the Tm:YAP Laser in CW Operation.