No abstract

No abstract

No abstract

Parametric superradiant (resonator free) generation in nonlinear crystals of ZnGeP2 and GaSe (type I phase matching) was obtained for the first time. As a pump source 110 ps pulses from the actively mode locked Er:YAG laser (2.94 pm) were used. The tuning range achieved was 4-10 pm (ZnGeP2) and 3.5-18 pm (GaSe). In case of ZnGeP 2 (42 mm crystal) and type I1 phase matching the quantum efficiency reached 17.6% ,corresponding to the output peak power of 3 MW near 5-6 pm.

No abstract