2026-09-21T08:53:09Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/121217 2023-12-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Eden, J. Gary Mironov, Andrey E Eden, J. Gary Mironov, Andrey E Dragic, Peter D Lorenz, Virginia O Ruzic, David N Zhao, Yang 2023-08 application/pdf en text Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01 The student, Kavita Desai, accepted the attached license on 2023-07-04 at 10:45. The student, Kavita Desai, submitted this Dissertation for approval on 2023-07-04 at 10:59. This Dissertation was approved for publication on 2023-07-07 at 13:40. DSpace SAF Submission Ingestion Package generated from Vireo submission #19508 on 2023-12-04 at 17:31:11 Laser Spectroscopy Stimulated Raman scattering, lasing, and molecular energy transfer mechanisms in KXe probed by laser spectroscopy Desai, Kavita V 2023-07-07 Excimers In laser spectroscopy experiments containing K-Xe vapor, collisional pairs are photoassociated to the B^2\mathrm{\Sigma}_{1/2}^+ and A^2\mathrm{\Pi} interatomic potentials. The combination of the shallow well of the KXe interatomic potentials along with the fine structure splitting of the K 4P states being ≪kT results in non-linear properties near the alkali D lines. Specifically in K-Xe vapor, stimulated Raman scattering has been observed, and its amplification is measured along with the excitation profile. This is the first demonstration of stimulated Raman scattering in both the alkali-rare gas molecules and a molecule with a dissociative ground state. Through these spectroscopy measurements, a high quantum efficiency laser/amplifier is engineered and physical properties of the KXe gain medium are characterized. Molecular features in KXe with fine resolution are also reported. In addition, the B^2\mathrm{\Sigma}_{1/2}^+ interatomic potential was also studied, and the state potential was modified using the Franck-Condon factor principle to include the blue satellite feature found in absorption and laser excitation experiments. Lastly, an excimer pumped alkali laser in KXe is demonstrated. Text eng https://hdl.handle.net/2142/121217 Copyright 2023 Kavita Desai Ph.D. Dissertation Electrical & Computer Engr University of Illinois at Urbana-Champaign Electrical & Computer Eng