Vv. Apollonov et al., FAR-INFRARED GENERATION BY CO2-LASERS FREQUENCIES SUBTRACTION IN A ZNGEP2 CRYSTAL, International journal of infrared and millimeter waves, 17(8), 1996, pp. 1465-1472
A pulsed radiation power,of the order of 1W in the submillimeter range
(102 - 110 mu m) was reached for the first time, with the hid of a Zn
GeP2 crystal, at the difference frequency of CO2 laser radiations.