title: Ultra-broadband optical parametric generation and simultaneous RGB generation in periodically poled lithium niobate.
abstract: We report on efficient collinear optical parametric generation (OPG) with gain band ranging from 1400 to 2600 nm in a 2 cm-long periodically poled lithium niobate (PPLN) crystal. Such an ultra-broad gain band was obtained by choosing the pump wavelength at 933 nm, at which the group-velocities of the signal and the idler match near the degeneracy point. High OPG efficiency was obtained by quasi-phase matching (QPM). The ultra-broadband OPG led to efficient collinear RGB generation from a single PPLN crystal at a fixed pump wavelength. The green and red beams were found to be originating from high-order QPM sum-frequency generation between the pump and selected frequencies in the OPG band, while the blue beam was high-order QPM second-harmonic generation of the pump.
authors: Department of Physics, Pusan National University, Busan 609-735, Korea.
authors: Hwan-Hong
authors: HH
authors: Lim
authors: Om
authors: O
authors: Prakash
authors: Byeong-Joo
authors: BJ
authors: Kim
authors: Krishnamoorthy
authors: K
authors: Pandiyan
authors: Myoungsik
authors: M
authors: Cha
authors: Bum Ku
authors: BK
authors: Rhee
mesh_terms: D003116:Color; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D009556:Niobium / Q000737:chemistry* / Q000528:radiation effects; D010087:Oxides / Q000737:chemistry* / Q000528:radiation effects; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate