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Poster
Polarization Sensitive Low Frequency Vibrational Spectra of Crystals
University of West Florida Libraries
Student Scholar Symposium & Faculty Research Showcase (University of West Florida, Pensacola, Florida, 04/20/2023)
04/20/2023
Abstract
We have measured the polarization-sensitive vibrational phonon spectra of a single crystal of cubic symmetry, Bismuth Germanite, with the chemical formula Bi3Ge4O12
(BGO). We observed the phonon modes connected to the symmetry species of the crystal. First, the polarization-sensitive Raman spectra were measured at specific configurations, allowing us to distinguish and associate band frequencies to the A, E, and F modes per group theory. We used and modified the laser system available at the laser spectroscopy lab at the University of West Florida to obtain the proper polarizations and excitation conditions necessary to isolate the modes.
Second, we have designed the polarization conditions for the actinic laser beams to measure the two-beam 3-color broadband coherent Raman spectra (3CBCRS [1,2]) of BGO. This poster presents of the measured and processed spectra of the low-frequency phonon modes. The background-free spectra were consistent with the spontaneous Raman spectra. It is proved here that the coherent Raman measurements can be used to identify the symmetry species associated with the different phonon modes as well in the former method.
Details
- Title
- Polarization Sensitive Low Frequency Vibrational Spectra of Crystals
- Resource Type
- Poster
- Event
- Student Scholar Symposium & Faculty Research Showcase (University of West Florida, Pensacola, Florida, 04/20/2023)
- Contributors
- Laszlo J Ujj (Faculty Mentor) - University of West Florida, Physics
- Publisher
- University of West Florida Libraries; Argo Scholar Commons
- Format
- pdf
- Copyright
- Permission granted to the University of West Florida Libraries by the author to digitize and/or display this information for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires the permission of the copyright holder.
- Identifiers
- 99380476497006600
- Academic Unit
- 2023 Student Scholars Symposium and Faculty Research Showcase; Office of Undergraduate Research; Physics
- Language
- English