Fig. 1. Experimental setup of Fe2+∶ZnSe laser

Fig. 2. Typical HF laser pulses oscillogram

Fig. 3. Transmittance of Fe2+∶ZnSe crystal

Fig. 4. Variations of absorptivity or pump energy absorbed by Fe2+∶ZnSe crystal with pump energy

Fig. 5. Variation of output energy with pump energy absorbed by Fe2+∶ZnSe crystal

Fig. 6. Fe2+∶ ZnSe laser pulse oscillograms. (a) Absorbed pump energy of 41 mJ; (b) absorbed pump energy of 172 mJ

Fig. 7. 2D intensity distribution pattern of Fe2+∶ZnSe laser

Fig. 8. Spectrum of Fe2+∶ZnSe laser