High Peak-Power Passively Q-switched All-Ceramics Nd:YAG/Cr~(4+):YAG Lasers

摘要

The output performances of a compact, passively Q-switched Nd:YAG/Cr~(4+):YAG laser were investigated using single crystals and poli-crystalline ceramics Nd:YAG with doping level between 1.0 and 2.0-at.% Nd, and single crystals and poli-crystalline ceramics Cr~(4+):YAG with various initial transmission. Q-switch laser pulses with energies up to 2 mj and duration below 1 ns were realized at a pump repetition rate of 10 Hz. An all-ceramics Nd:YAG/Cr~(4+):YAG laser could be a solution for ignition of automotive engines. The optical intensity of a laser pulse with ns duration that induces optical air breakdown was determined.