Optics

Volume 10, Issue 1, June 2021

  • Lambda-type Three-Level Laser Coupled to Squeezed Vacuum Reservoir

    Takele Teshome, Gomera Biyazn, Misrak Gatahun

    Issue: Volume 10, Issue 1, June 2021
    Pages: 1-6
    Received: 7 March 2021
    Accepted: 17 March 2021
    Published: 30 March 2021
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    Abstract: The squeezing, entanglement, and statistical properties of light produced by lambda-type three-level laser coupled to squeezed vacuum reservoir have been studied. We have determined the quadrature variances mean as well as variance photon number photon for cavity modes with the aid of the solutions of c-number Langevin equations associated with the... Show More
  • Raman and Surface-Enhanced Raman Spectroscopy of Fatty Acids and Lipids

    Eric Amankwa

    Issue: Volume 10, Issue 1, June 2021
    Pages: 7-22
    Received: 4 May 2021
    Accepted: 20 May 2021
    Published: 27 May 2021
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    Abstract: The goal of this thesis was to study, determine, and measure Raman and surface-enhanced Raman spectroscopy (SERS) of fatty acids and lipids. Firstly, the Raman measurement was done using silver substrate where the activation process was achieved by focusing crystals of green laser radiation 5 mW power at 5 minutes on the silver substrate. The Raman... Show More