Midinfrared laser source with high power and beam quality.
A simple scheme for generation of high power in the midinfrared is demonstrated. By using a 15 W thulium-doped fiber laser emitting at 1907 nm to pump a Q-switched Ho:YAG laser, we obtained 9.8 W at 2096 nm at a 20 kHz pulse repetition rate with excellent beam quality. The output of this laser was used to pump a doubly resonant zinc germanium phosphide based optical parametric oscillator, and we obtained 5.1 W average power in the 3-5 microm range with M2 approximately = 1.8.
Lippert
Espen
E
Norwegian Defence Research Establishment, Kjeller, Norway.
Nicolas
Stephane
S
Arisholm
Gunnar
G
Stenersen
Knut
K
Rustad
Gunnar
G