Nanosecond tunable from 2 to 3 µm Cr2+: ZnSe solid-state laser

We developed a tunable in spectral range from 2 to $3 \mu \mathrm{m}$ pulsed solid state laser based on the $\mathrm{Cr}^{2+}: \mathrm{ZnSe}^{2}$ crystal with 2.15 mJ maximum output energy at $2.35 \mu \mathrm{m}, 7 \mathrm{~ns}$ pulse length and 100 Hz repetition rate. This laser could be used in theranostic system which combines a laser therapy and optoacoustic diagnoctic.