Kappers, Lawrence

Electron spin resonance and optical techniques are used to study impurity ions and defects formed during exposure to radiation in a variety of optical materials. An understanding of the defects formed and the influence they have on the physical properties of these materials, plays an important role in practical applications involving acousto-optic, electro-optic, scintillation, laser and various other optical processes.

Education

• Ph.D., University of Missouri-Columbia, 1970
• M.S., University of Missouri-Columbia, 1966
• B.S., Central College, Pella, Iowa, 1963

Experience

• 1973-present: Professor, Department of Physics, University of Connecticut
• 1970-1972: Postdoctoral Fellow, University of Minnesota

Professional Societies

• American Physical Society
• American Association of University Professors
• Optical Society of America
• Society of Photo-Optical Instrumentation Engineers
• Sigma Xi

Recent Publications

1. R. H. Bartram, L. A. Kappers, D. S. Hamilton, A. Lempicki, C. Brecher, V. Gaysinskiy, E. E. Ovechkina and V. V. Nagarkar, Afterglow Suppression and Non-Radiative Charge-Transfer in CsI:Tl,Sm, IEEE Trans. Nucl. Sci. 55 No. 3, 1232-1236 (2008)
2. L. A. Kappers, O. R. Gilliam, S. M. Evans, L. E. Halliburton and N. C. Giles, EPR and optical study of oxygen and zinc vacancies in electron-irradiated ZnO, Nucl. Instr. and Meth. In Phys. Res. B 266 2953-2957 (2008).
3. S. M. Evans, N. C. Giles, L. E. Halliburton and L. A. Kappers, Further characterization of oxygen vacancies and zinc vacancies in electron-irradiated ZnO, J. Appl. Phys. 103 043710-043716 (2008).
4. L. A. Kappers, R. H. Bartram, D. S. Hamilton, C. Brecher, A. Lempicki, V. Gaysinskiy, E. E. Ovechkina and V. V. Nagarkar, Effect of Eu²⁺ Concentration on Afterglow Suppression in CsI:Tl,Eu, Radiation Measurements 42 537-540 (2007).
5. I. Foldvari, A. Baraldi, R. Capelletti, N. Magnani, R. Sosa F., A. Munoz F., L. A. Kapper and A. Watterich, Optical absorption and luminescence of Ho³⁺ ions in Bi₂TeO₅ single crystal, Opt. Mater. 29 688-696 (2007).