Fig. 1. Energy-level diagrams for Tm, Ho:YAG^[18].

Fig. 2. Schematic of the experimental setup.

Fig. 3. Spectrum of Tm, Ho:YAG laser under free running.

Fig. 4. F-P spectrum of the free Tm, Ho:YAG laser.

Fig. 5. Spectrum of the Tm, Ho:YAG laser with a 0.05 mm etalon.

Fig. 6. F–P spectrum of the Tm, Ho:YAG laser with a 0.05 mm etalon.

Fig. 7. Spectrum of the Tm, Ho:YAG laser with SLM operation.

Fig. 8. F-P spectrum of the SLM Tm, Ho:YAG laser.

Fig. 9. Wavelength stability of the SLM Tm, Ho:YAG laser.

Fig. 10. Output power as a function of pump power.