Now showing items 21-40 of 70

  • [2010-02-09] Low temperature transport and Coulomb drag studies of undoped electron-hole bilayers 

    Morath, Christian
    This dissertation describes a series of three experiments focused on low electronic temperature transport and Coulomb drag in GaAs electron-hole bilayers. Electron-hole bilayers are of immense interest for exciton ...
  • [2010-02-09] Nonlinear microscopy for material characterization 

    Weber, Reed Alan
    Making use of femtosecond laser sources, nonlinear microscopy exhibits inherent 3- dimensional optical sectioning and provides access to previously unstudied aspects of materials. By probing third order nonlinear optical ...
  • [2010-02-09] Synthesis and evaluation of rare-earth doped glasses and crystals for optical refrigeration 

    Patterson, Wendy Marie
    This research focused on developing and characterizing rare-earth doped, solid-state materials for laser cooling. In particular, the work targeted the optimization of the laser-cooling efficiency in Yb3+ and Tm3+ doped ...
  • [2010-02-09] High electric field deuterium ion sources for neutron generators 

    Reichenbach, Birk
    Active interrogation systems for highly enriched uranium require improved fieldable neutron sources. The target technology for deuterium-tritium neutron generators is well understood and the most significant improvement ...
  • [2010-02-09] Optical control and quantum information processing with ultracold alkaline-earth-like atoms 

    Reichenbach, Iris Evelyn Nicole
    Ultracold neutral atoms in optical lattices are rich systems for the investigation of many-body physics as well as for the implementation of quantum information processing. While traditionally alkali atoms were used for ...
  • [2010-02-09] Parameter estimation, model reduction and quantum filtering 

    Chase, Bradley
    This thesis explores the topics of parameter estimation and model reduction in the context of quantum filtering. The last is a mathematically rigorous formulation of continuous quantum measurement, in which a stream of ...
  • [2010-06-25] Analysis and modeling of phase noise in LOCSET and the AFRL high power fiber test bed 

    Seeley, Don
    High power ytterbium doped fiber amplifier arrays in a master oscillator-power amplifier configuration and the phase noise in such a system is studied. An effective method of coherently combining the elements in such an ...
  • [2010-06-25] Dispersion, controlled dispersion, and three applications 

    Bradshaw, Douglas Harris
    Causality dictates that all physical media must be dispersive. (We will call a medium dispersive if its refractive index varies with frequency.) Ordinarily, strong dispersion is accompanied either by strong absorption ...
  • [2010-06-25] Bidirectional mode-locked fiber ring laser 

    de Pinho e Braga, Alexandre Bittencourt
    In modern day world, advances in technology are constantly pushing the limits of improvement in measurement accuracy. With each passing year, government agencies and contract companies increase investment in research of ...
  • [2010-06-28] Theoretical and experimental studies of optically pumped molecular gas lasers 

    Amarin, Ratanavis
    Optically pumped molecular gas lasers based on vibrational-rotational transitions in the infrared spectral region were studied experimentally and theoretically. A model was developed to predict the ...
  • [2011-02-08] Structural and Magnetic Phase Transitions in Manganese Arsenide Thin-Films Grown by Molecular Beam Epitaxy 

    Jaeckel, Felix T.
    Phase transitions play an important role in many fields of physics and engineering, and their study in bulk materials has a long tradition. Many of the experimental techniques involve measurements of thermodynamically ...
  • [2011-02-08] Kinetic and Statistical Mechanical Modeling of DNA Unzipping and Kinesin Mechanochemistry 

    Herskowitz, Lawrence
    This thesis explores two topics. The first is shotgun DNA mapping (SDM). Ability to map polymerases and nucleosomes on chromatin is important for understanding the impact of chromatin remodeling on key cellular processes. ...
  • [2011-05-02] Microtubule Gliding Assay [dataset] 

    Maloney, Andy; Koch, Steve
    These data are images of gliding motility assays using kinesin-1 and 29% rhodamine tagged microtubules. Each image was taken with an Andor Luca S EMCCD camera with a gain of 150 and an exposure of 100 ms. A total of 600 ...
  • [2012-05-14] Event structure and double helicity asymmetry in jet production from polarized p+ p collisions at sqrt [s]= 200 GeV 

    Fields, Douglas E.; PHENIX Collaboration; Barnes, P. D.; Boissevain, J. G.; Brooks, M. L.; Butsyk, S.; Constantin, P.; Kunde, G. J.; Lee, D. M.; Leitch, M. J.; Liu, M. X.; McGaughey, P. L.; Norman, B. E.; Palounek, A. P. T.; Purwar, A. K.; Sondheim, W. E.; Van Hecke, H.W.; Bassalleck, B.; Haegemann, C.; Hobbs, R.; Malik, M. D.; Rak, J.; Thomas, T. L.; Younus, I.; Al-Bataineh, H.; Armendariz, R.; Kyle, G. S.; Papavassiliou, V.; Pate, S. F.; Stepanov, M.; Wang, X. R.
    We report on the event structure and double helicity asymmetry (ALL) of jet production in longitudinally polarized p+p collisions at √s=200  GeV. Photons and charged particles were measured by the PHENIX experiment at ...
  • [2012-05-14] Identified charged hadron production in p+ p collisions at sqrt [s]= 200 and 62.4 GeV 

    Fields, Douglas E.; PHENIX Collaboration; Barnes, P. D.; Boissevain, J. G.; Butsyk, S.; Camacho, C. M.; Constantin, P.; Kapustinsky, J.; Kunde, G. J.; Lee, D. M.; Leitch, M. J.; Liu, M. X.; McGaughey, P. L.; Norman, B. E.; Palounek, A. P. T.; Purwar, A. K.; Sondheim, W. E.; Van Hecke, H. W.; Bassalleck, B.; Haegemann, C.; Malik, M. D.; Rak, J.; Thomas, T. L.; Younus, I.; Al-Bataineh, H.; Armendariz, R.; Kyle, G. S.; Liu, H.; Papavassiliou, V.; Pate, S. F.; Stepanov, M.; Wang, X. R.
    Transverse momentum distributions and yields for π±, K±, p, and p̄ in p+p collisions at √s = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data ...
  • [2011-07-02] Microwave techniques and applications for semiconductor quantum dot mode-locked lasers 

    Lin, Chang-Yi
    Semiconductor mode-locked lasers (MLLs) are important as compact and cost-effective sources of picosecond or sub-picosecond optical pulses with moderate peak powers. They have potential use in various fields including ...
  • [2011-07-02] Experimental protocols for and studies of the effects of surface passivation and water isotopes on the gliding speed of microtubules propelled by kinesin-1 

    Maloney, Roger
    This dissertation explores how the kinesin-1 and microtubule system is affected by surface passivation and water isotopes. Surface passivation was found to affect the gliding speed that microtubules exhibit in the ...
  • [2011-07-02] High redshift QSOs and cool dwarfs in the Deep Lens Survey 

    Thorman, Paul
    The Deep Lens Survey, a 20 deg2 optical survey, was used to search for two types of rare, very red objects: faint high-redshift (z > 5.4) quasars, which trace structure formation in the early Universe and can be used to ...
  • [2011-07-02] Coherent control of collective atomic spins 

    Trail, Collin
    In this thesis I explore the use of collective spin angular momentum as a platform for quantum information processing. Such systems have several nice features that make them excellent choices for such protocols, especially ...
  • [2012-05-14] Suppression of away-side jet fragments with respect to the reaction plane in Au+ Au collisions at sqrt [s_ {NN}]= 200 GeV 

    Fields, Douglas E.; PHENIX Collaboration; Al-Bataineh, H.; Kyle, G. S.; Liu, H.; Papavassiliou, V.; Pate, S. F.; Stepanov, M.; Wang, X. R.; Barnes, P. D.; Boissevain, J. G.; Brooks, M. L.; Butsyk, S.; Camacho, C. M.; Constantin, P.; Kapustinsky, J.; Kunde, G. J.; Lee, D. M.; Leitch, M. J.; Liu, M. X.; McGaughey, P. L.; Palounek, A. P. T.; Purwar, A. K.; Sondheim, W. E.; Van Hecke, H. W.; Bassalleck, B.; Kotchetkov, D.; Malik, M. D.; Rak, J.; Thomas, T. L.; Younus, I.
    Pair correlations between large transverse momentum neutral pion triggers (pT=4--7 GeV/c) and charged hadron partners (pT=3--7 GeV/c) in central (0%–20%) and midcentral (20%–60%) Au+Au collisions at √sNN=200 GeV are presented ...