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  • A contribution to the development of wide band-gap nonlinear optical and laser materials

    Creator:
    Stone-Sundberg, Jennifer L.
    Abstract:
    The primary focus of this work is on examining structure-property relationships of interest for high-power nonlinear optical and laser crystals. An intuitive and simply illustrated method for assessing the nonlinear optical potential of structurally characterized noncentrosymmetric materials is introduced. This method is applied to materials including common quartz and tourmaline...
    Resource Type:
    Dissertation
    Full Text:
    Development of Wide Band-Gap Nonlinear Optical and Laser Materials Abstract approved: Douglas A. Keszler

  • Investigating Low-Frequency Vibrations in Condensed Matter Using Time-Resolved Third-Harmonic Generation Spectroscopy

    Creator:
    Wang, Liang
    Abstract:
    In this thesis, I present a new method we developed to study low frequency (< 700 cm⁻¹) vibrational dynamics: Time-resolved third-harmonic generation (TRTHG) spectroscopy. Among a variety of vibrational spectroscopy techniques, TRTHG differentiates itself with robustness, versatility, and simplicity. In TRTHG experiment, that involves only two ultrashort laser pulses, the...
    Resource Type:
    Masters Thesis
    Full Text:
    . Nonlinear optics is a branch of optics that describes how light interacts with nonlinear media in which

  • Nonlinear Raman spectroscopy of gases

    Creator:
    Lundeen, Thomas F.
    Abstract:
    Applications of several methods of coherent nonlinear Raman Spectroscopy have been made in this thesis research. The theory and potential of one of these, Photoacoustic Raman Spectroscopy (PARS), is discussed in chapter two. Experimental results are presented which illustrate the sensitivity of this method and establish sampling conditions for maximum...
    Resource Type:
    Dissertation
    Full Text:
    of DOCTOR OF PHILOSOPHY in CHEMISTRY presented on JANUARY 12,1984 Title: Nonlinear Raman

  • Applications of nonlinear raman spectroscopy

    Creator:
    Melin, Stéphanie
    Abstract:
    Two nonlinear optical experiments are presented in which the third-order electronic susceptibility of molecules is used to generate Raman signals. The first one uses a single 532 nm beam from a Nd:YAG laser to produce Stimulated Raman Scattering in benzene and deuterated benzene. With a simple experimental set-up, stimulated emission...
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Chemistry presented on September 4, 2002. Title: APPLICATIONS OF NONLINEAR RAMAN

  • Nonlinear Raman spectroscopy in supersonic jets

    Creator:
    Pubanz, George A.
    Abstract:
    The techniques of coherent anti-Stokes Raman spectroscopy (CARS) and inverse Raman spectroscopy (IRS) are used to examine carbon dioxide aggregation in a supersonic jet expansion. To promote the formation of small clusters, a BMW injector valve is modified to permit its use as a pulsed nozzle at very cold temperatures....
    Resource Type:
    Dissertation
    Full Text:
    Nonlinear Raman spectroscopy in supersonic jets AN

  • Synthesis and study of new borate optical hosts

    Creator:
    Alekel, Theodore
    Resource Type:
    Dissertation
    Full Text:
    system, Ba7(B03)3F is a noncentrosymmetric structure that exhibits a capability for second harmonic

  • A new trigonal huntite material and subgroup relationships between crystallographic space groups

    Creator:
    Hruschka, Michael Archimedes and Hruschka, Michael A.
    Abstract:
    The use of an adjacency matrix to determine distant (not maximal or minimal) subgroup and supergroup relationships between crystallographic spacegroup types is described. Full lists of space-group types that are supergroups and subgroups for every space-group type were compiled. A list of the space-group types connected to each space-group type...
    Resource Type:
    Dissertation
    Full Text:
    borate. Linear and nonlinear optical properties, the structure, and the composition range of this

  • New multi-functional chalcogenides for photovoltaic and thermoelectric materials

    Creator:
    Heo, Jaeseok
    Abstract:
    The subject of this PhD thesis is part of a research domain of great present interest in new semiconductor materials for photovoltaic and thermoelectric applications. This domain contains the elaboration and the study of both Cu-based chalcogenides bulk and thin-film samples, driven by materials design principles. One of the most...
    Resource Type:
    Dissertation
    Full Text:
    Figure S4.2 Relationship between unit cell volumes and optical band-gaps in Cu3-V-VI4 materials system

  • Magnetodielectric Effects from Spin Fluctuations in Isostructural Ferromagnetic and Antiferromagnetic Systems

    Creator:
    Lawes, G., Ramirez, A. P., Varma, C. M., and Subramanian, M. A.
    Abstract:
    We report on the effects of spin fluctuations, magnetic ordering, and external magnetic field on the dielectric constant of the ferromagnet SeCuO₃, and the antiferromagnet TeCuO₃. A model based on the coupling between uniform polarization and the q-dependent spin-spin correlation function is presented to explain the different behaviors for these...
    Resource Type:
    Article
    Full Text:
    Goodenough-Kanemori value (�GK � 127:5�). The isomorphic system TeCuO3, on the other hand, exhibits 2003 The

  • Bridging the Gap Between Equilibrium Properties and Ultrafast Dynamics with Time-Resolved Spectroscopy of Functional Systems

    Creator:
    Krueger, Taylor D.
    Abstract:
    Ultrafast spectroscopy has recently gained momentum as a powerful, noninvasive characterization toolset capable of studying a diverse array of samples with applications in chemistry, physics, biology, engineering, and more. Two popular ultrafast spectroscopic techniques include femtosecond transient absorption (fs-TA) and femtosecond stimulated Raman spectroscopy (FSRS). The latter of these techniques...
    Resource Type:
    Dissertation
    Full Text:
    protein (FP) that is used as a model system to study the hidden photoconversion mechanism, these