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  • High resolution ionization-detected simulated Raman spectroscopy

    Creator:
    Crew, Marshall D.
    Abstract:
    A new experimental apparatus was built at Oregon State University to perform high resolution stimulated Raman spectroscopy in a pulsed molecular jet at state densities of the order of 10¹¹ cm⁻³. The technique uses a stimulated Raman step to first populate a vibrational/rotational level and then a resonantly enhanced multiphoton...
    Resource Type:
    Dissertation
    Full Text:
    centered around the study of molecular cluster properties using coherent Raman spectroscopy. Clusters are

  • 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:
    susceptibility '3 is the molecular parameter involved in CARS spectroscopy, which is a form of four-wave mixing

  • Capturing Molecular Movies of Organic and Organometallic Systems in Solution by Ultrafast Spectroscopy

    Creator:
    Boulanger, Sean A.
    Abstract:
    Ultrafast spectroscopy can exploit the structure-function relationship of chemical- and biological-based systems. More specifically, femtosecond stimulated Raman spectroscopy (FSRS) provides ground- and excited-state vibrational information with simultaneously high spectral (spatial) and temporal resolutions. The electronic counterpart, femtosecond transient absorption (fs-TA), complements FSRS data analysis as part of a comprehensive approach...
    Resource Type:
    Dissertation
    Full Text:
    on May 19, 2022. Title: Capturing Molecular Movies of Organic and Organometallic Systems in

  • Excited state molecular structural evolution and chemical reactivity studied by femtosecond stimulated Raman spectroscopy

    Creator:
    Han, Fangyuan
    Abstract:
    In this dissertation, my research work on excited state dynamics of small organic molecules in solutions is presented. Using femtosecond stimulated Raman spectroscopy (FSRS) as the main experimental tool, the excited state hydrogen-bonding dynamics (ESHBD) of Coumarin 102, a common laser dye molecule, in ethanol solution is examined with <150...
    Resource Type:
    Dissertation
    Full Text:
    Reactivity Studied by Femtosecond Stimulated Raman Spectroscopy AN ABSTRACT OF THE DISSERTATION OF

  • Zero kinetic energy photoelectron spectroscopy of polycyclic aromatic hydrocarbons

    Creator:
    Zhang, Jie
    Abstract:
    In this dissertation, I present electronic spectra of a few polycyclic aromatic hydrocarbons (PAHs): tetracene, pentacene, pyrene, benzo[g,h,i]perylene and benzo[a]pyrene using resonantly enhanced multiphoton ionization (REMPI) and zero kinetic energy (ZEKE) photoelectron spectroscopy. The work of tetracene and pentacene also combine a laser desorption source with a ZEKE spectrometer, demonstrating...
    Resource Type:
    Dissertation
    Full Text:
    Photoelectron Spectroscopy of Polycyclic Aromatic Hydrocarbons. Abstract approved

  • Zero Kinetic Energy Photoelectron Spectroscopy of Polycyclic Aromatic Hydrocarbons

    Creator:
    Harthcock, Colin
    Abstract:
    In this dissertation, I describe spectroscopic studies of jet-cooled polycyclic aromatic hydrocarbons (PAH) and one nitrogen substituted PAH (PANH) using pulsed field zero kinetic energy (ZEKE) photoelectron spectroscopy and resonantly enhanced multiphoton ionization (REMPI) spectroscopy. Recently, there has been a demand for far-infrared (FIR) spectral information of astrophysically relevant molecules...
    Resource Type:
    Dissertation
    Full Text:
    Zero Kinetic Energy Photoelectron Spectroscopy of Polycyclic

  • High resolution spectroscopic studies of ³²S¹⁶O₃ and ³⁴S¹⁶O₃

    Creator:
    Barber, Jeffrey
    Abstract:
    The two sulfur isotopomers of sulfur trioxide, ³²S¹⁶O₃ and ³⁴S¹⁶O₃, have been studied via high resolution infrared and Coherent anti-Stokes Raman (CARS) spectroscopy. The v₁ symmetric SO stretching Q-branches observed by the latter are quite different, being especially complex for ³²S¹⁶O₃ Understanding this band structure required analysis of infrared-active hot...
    Resource Type:
    Dissertation
    Full Text:
    Northwest National Laboratory, P.O. Box 999, Mail Stop K8-88, Richiand, WA 99352 Journal of Molecular

  • Derivation of Halide Bond Lengths through Fourier Transform Infrared Spectroscopy

    Creator:
    Gonzales, Seth
    Abstract:
    The physical properties of hydrochloric acid and deuterium chloride were derived through the use of the harmonic oscillator and rigid rotor quantum mechanical models. By first obtaining angular momentum quantum values for HCl and DCl through Fourier Transform Infrared Spectroscopy, these two systems could be summed and processed with additional...
    Resource Type:
    Research Paper
    Full Text:
    Derivation of Halide Bond Lengths through Fourier Transform Infrared Spectroscopy Seth Gonzales Eric Qian

  • 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:
    Peptides Measured by Femtosecond Nonlinear-Infrared Spectroscopy. The Journal of Physical Chemistry B

  • High resolution spectroscopy of sulfur trioxide and carbon suboxide

    Creator:
    Masiello, Tony
    Abstract:
    High resolution spectroscopy was used to study the properties of two simple polyatomic molecules, sulfur trioxide, SO₃, and carbon suboxide, C₃O₂. The fundamental modes and several hot bands of the ¹⁸O isotopic fonns of SO₃ (³²S¹⁸O₃ and ³⁴S¹⁸O₃) have been investigated using both infrared spectroscopy and coherent anti-Stokes Raman scattering...
    Resource Type:
    Dissertation
    Full Text:
    research is the use of coherent anti-Stokes Raman scattering (CARS) spectroscopy as a molecular probe