Passively Q-switched Nd:GYSGG laser operating at 1.3 μm with V:YAG as saturable absorber

Laser Performance of Neodymium- and Erbium-Doped GYSGG Crystals

“…Its absorption cross-section for the ground state is 7.2 × 10 −18 cm 2 at 1.34 µm, while it is much lower for the excited state, making it easy to be bleached. Song et al reported a 1331 nm V 3+ :YAG Q-switched Nd:GYSGG laser delivering an average power of 251 mW [33]. The minimum pulse width was 23.9 ns at 11 kHz, corresponding to a peak power of 954 W. Lin et al investigated another saturable absorber for passively Q-switching, Co:MgAl 2 O 4 [34], whose absorption peak was close to 1520 nm and which is mostly used for lasers in the eye-safe wavelength region.…”