title: Metalloporphyrin polymer with temporally agile, broadband nonlinear absorption for optical limiting in the near infrared.
abstract: A lead bis(ethynyl)porphyrin polymer possesses strong nonlinear absorption with unprecedented spectral/temporal coverage as a result of broad, overlapping two-photon and excited-state absorption bands with favorable excited-state dynamics. Consequently, this material exhibits effective optical limiting over a range of about 500 nm in the near infrared (ca. 1050 - 1600 nm) and for laser pulsewidths spanning from 75 fs to 40 ns. Introduction of the material in a waveguide device geometry results in a strong optical limiting response.
authors.affiliation: School of Chemistry and Biochemistry, Center for Organic Photonics and Electronics, Georgia Institute of Technology, 901 Atlantic Dr NW, Atlanta, Georgia 30332, USA.
authors.forename: Joel M
authors.initials: JM
authors.lastname: Hales
authors.forename: Matteo
authors.initials: M
authors.lastname: Cozzuol
authors.forename: Thomas E O
authors.initials: TE
authors.lastname: Screen
authors.forename: Harry L
authors.initials: HL
authors.lastname: Anderson
authors.forename: Joseph W
authors.initials: JW
authors.lastname: Perry
mesh_terms: D000042:Absorption; D003198:Computer Simulation; D007259:Infrared Rays; D007700:Kinetics; D008665:Metalloporphyrins / Q000737:chemistry*; D017711:Nonlinear Dynamics; D011108:Polymers / Q000737:chemistry*; D012996:Solutions
chemical_list: D008665:Metalloporphyrins; D011108:Polymers; D012996:Solutions