title: Efficient difference-frequency generation of 7- 20-mum radiation in CdGeAs(2).
abstract: Continuously tunable 6.8-20.1-mum mid-infrared radiation has been achieved by the use of frequency generation in CdGeAs(2). The signal and the idler output of an Er-laser-pumped ZnGeP(2) optical parametric generator was used as the pump. The maximum external conversion efficiency reached 20%.
authors: K L
authors: KL
authors: Vodopyanov
authors: P G
authors: PG
authors: Schunemann