High pulse energy ZnGeP2 OPO directly pumped by a Q-switched Tm3+-doped single-oscillator fiber laser

Schneider, JulianJulianSchneiderForster, PatrickPatrickForsterRomano, ClémentClémentRomanoEichhorn, MarcMarcEichhornKieleck, ChristelleChristelleKieleck2022-03-062022-03-062021https://publica.fraunhofer.de/handle/publica/26775510.1364/OL.422702A mid-infrared ZnGeP2 optical parametric oscillator pumped by a Tm3+-doped fiber laser is reported, providing pulse energies of 230µJ, pulse widths of 40 ns, and peak powers of ∼6kW with excellent efficiency and beam quality. The pump source is an actively 𝑄-switched single oscillator optimized to generate high pulse energies.en004535670High pulse energy ZnGeP2 OPO directly pumped by a Q-switched Tm3+-doped single-oscillator fiber laserjournal article