title: Terahertz generation based on parametric conversion: from saturation of conversion efficiency to back conversion.
abstract: By stacking alternatively rotated gallium phosphide (GaP) plates, the maximum photon conversion efficiency of 40% for the terahertz (THz) generation based on difference-frequency generation has been achieved. The corresponding peak power generated inside the four GaP plates approaches 4 kW. As the number of plates is increased from four to five, the THz output power is significantly decreased, due to back parametric conversion.
authors.affiliation: Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, USA.
authors.forename: Yi
authors.initials: Y
authors.lastname: Jiang
authors.forename: Da
authors.initials: D
authors.lastname: Li
authors.forename: Yujie J
authors.initials: YJ
authors.lastname: Ding
authors.forename: Ioulia B
authors.initials: IB
authors.lastname: Zotova