Fig. 1. Layout of the Ho:YAG laser end-pumped by a TDFL.

Fig. 2. Ho:YAG effective absorption cross section^[24] (black curve) and transmission through a standard atmosphere^[25] (blue curve).

Fig. 3. Output power and spectrum of the TDFL pump source.

Fig. 4. Output power and spectrum of the Ho:YAG laser.

Fig. 5. Output power and pulse width of the Ho:YAG laser at a PRF of 1 kHz.

Fig. 6. Temperature distribution in an axial cross section of the Ho:YAG rod.

Fig. 7. Transformation of the output beam for a stable resonator containing a thermal lens fth.

Fig. 8. Dependence of the beam size on the thermal focal length at different values of L1.