Fig. 1. Schematic diagram of the 1514 nm SOPO (Cr4+:YAG with transmission of 91%).

Fig. 2. (a) σ-polarized absorption spectrum and π-polarized fluorescence absorption spectrum of Nd:MgO:PPLN, (b) σ-polarized absorption spectrum and π-polarized fluorescence emission spectrum of Nd:MgO:PPLN.

Fig. 3. 1084 nm output power and signal single-pulse energy of a Q-switched laser using Cr4+:YAG, depending on absorbed pump power.

Fig. 4. Single-pulse repetition rate and pulse energy versus absorbed pump powers for passively Q-switched 1084 nm fundamental light.

Fig. 5. 1084 nm output spectrum of the passively Q-switched laser.

Fig. 6. 1084 nm single-pulse energy and 1514 nm single-pulse energy.

Fig. 7. 1514 nm eye-safe output spectrum of the passively Q-switched laser.

Fig. 8. 1514 nm fundamental light repetition frequency and single-pulse width.