title: Electro-optically tunable, multi-wavelength optical parametric generators in aperiodically poled lithium niobates.
abstract: We report on the design and demonstration of electro-optically tunable, multi-wavelength optical parametric generators (OPGs) based on aperiodically poled lithium niobate (APPLN) crystals. Two methods have been proposed to significantly enhance the electro-optic (EO) tunability of an APPLN OPG constructed by the aperiodic optical superlattice (AOS) technique. This is done by engineering the APPLN domain structure either in the crystal fabrication or in the crystal design process to increase the length or block-number difference of the two opposite-polarity domains used in the structure. Several orders of magnitude enhancement on the EO tuning rate of the APPLN OPGs constructed by the proposed techniques for simultaneous multiple signal wavelength generation over a conventional one has been demonstrated in a near infrared band (1500-1600 nm).
authors.affiliation: Department of Optics and Photonics, National Central University, Jhongli 320, Taiwan. yhchen@dop.ncu.edu.tw
authors.forename: Y H
authors.initials: YH
authors.lastname: Chen
authors.forename: H P
authors.initials: HP
authors.lastname: Chung
authors.forename: W K
authors.initials: WK
authors.lastname: Chang
authors.forename: H T
authors.initials: HT
authors.lastname: Lyu
authors.forename: J W
authors.initials: JW
authors.lastname: Chang
authors.forename: C H
authors.initials: CH
authors.lastname: Tseng
mesh_terms: D003460:Crystallization / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009556:Niobium / Q000737:chemistry* / Q000528:radiation effects*; D010087:Oxides / Q000737:chemistry* / Q000528:radiation effects*; D012031:Refractometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate