CLEO: QELS-Fundamental Science Tuesday, 11 June

Executive Ballroom210HExecutive Ballroom210GExecutive Ballroom210FExecutive Ballroom210ECLEO: Science& InnovationsCTu2E • NLO in Fibers—ContinuedCTu2F • Silicon PhotonicModulators—ContinuedCTu2G • MicrowavePhotonics I—ContinuedCTu2H • Measurements inExtreme Environments—ContinuedCTu2E.8 • 15:45Dense plasma channel generation in air usingfemtosecond-picosecond laser pulse sequences,Andreas Schmitt-Sody 1 , Adrian Lucero 1 , WilliamLatham 1 , William P. Roach 1 , Jerome Moloney 2 ,Pavel G. Polynkin 2 ; 1 AFRL, USA; 2 College of OpticalScience, The University of Arizona, USA. We densifydilute plasma in femtosecond laser filamentsby heating it with energetic 200 picosecond-longlaser pulses. Differently from the case of nanosecondheating, the densified plasma channels,under certain conditions, remain smooth andcontinuous.CTu2F.7 • 15:45Silicon-VO2 Hybrid Electro-optic Modulator,Petr Markov 1 , Judson D. Ryckman 1 , Robert E.Marvel 2 , Kent A. Hallman 2 , Richard F. Haglund 2 ,Sharon M. Weiss 1,2 ; 1 Department of ElectricalEngineering and Computer Science, VanderbiltUniversity, USA; 2 Department of Physics andAstronomy, Vanderbilt University, USA. We demonstrateelectro-optical modulation in a siliconvanadiumdioxide hybrid device. A combinedeffect from applied electric field and Joule heatingis used to switch a microscopic vanadium dioxidepatch deposited on top of a silicon single-moderidge waveguide.CTu2G.7 • 15:45Photonic Synthesis of Spread Spectrum RadioFrequency Waveforms over Arbitrarily LongTime Apertures, Yihan Li 1 , Amir Dezfooliyan 1 ,Andrew M. Weiner 1 ; 1 School of Electrical andComputer Engineering, Purdue University, USA.A photonic radio frequency generation setup isdesigned to generate arbitrary waveforms with~10 GHz bandwidth and arbitrarily long timeapertures. Experiments are conducted through implementingpseudorandom sequence modulationand differential optical-to-electrical conversion.CTu2H.8 • 15:45Comparison of nanosecond and femtosecondLIBS, Sivanandan Harilal 1 ; 1 Purdue Univ, USA. Wereport a comprehensive study of the differences inthe emission and hydrodynamics expansion featuresof ns and fs LIBS plumes under both vacuumand atmosphere environments under similar laserfluence conditions.16:00–16:30 Coffee Break, Exhibit Halls 1 and 2NOTES_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Tuesday, 11 JuneConcurrent sessions are grouped across four pages. Please review all four pages for complete session information.1132013CLEO Tuesday.indd 225/17/13 3:11 PM