EDUCATION
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Ph.D., Electrical Engineering, University of California, Davis, 1993.
M. S., Electrical Engineering, University of California, Davis, 1989.
B. S., Biomedical Engineering, Universidad Autónoma Metropolitana, México, 1985.
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PROFESSIONAL EXPERIENCE
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Adjunct Associate Professor, Department of Electrical and Computer Engineering, UC Davis, 2000-Present
Research Engineer, Department of Electrical and Computer Engineering, UC Davis, 1995-2000.
Assistant Professor. CICESE, Department of Optics, Ensenada, México, 1994-1995.
Postdoctoral Researcher. Department of Electrical and Computer Engineering, UC Davis, 1993-1994.
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AFFILIATION
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Electrical and Computer Engineering Graduate Group
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RESEARCH INTERESTS
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Sum frequency Spectroscopy of collagen, ultrashort pulse nonlinear optical microscopy, nonlinear polymeric materials and characterization of their linear and nonlinear parameters, electro-optic polymeric devices, optical applications of polisiloxanes.
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RESEARCH ACTIVITIES
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The research activities of Diego Yankelevich are aimed towards the device application and characterization of organic nonlinear polymers, either synthetic or naturally occurring. A resent result is the identification of the molecular origins of the second nonlinear optical effects in collagen. For more than three decades it was known that collagen, the most abundant protein in vertebrates, efficiently produce second harmonic generation. In collaboration with other UCD researchers, using sum frequency generation spectroscopy, which is a spectroscopy method that measures the presence and noncentrosymmetry of molecular groups, the molecular entities within collagen that are responsible for the second harmonic generation have been identified. A second component of his research is related to biological microscopy imaging using ultrashort laser pulses. This instrument he has helped develop has been used to quantify structural disorder in collagenous tissue. With respect to non-biophysical research, he explores the application of polymers aimed at optical device applications such as polysiloxane thermo-optic side-polished fiber variable attenuators, high-speed polymeric modulators and filters based on evanescent field architectures. He has also been active in the development of methods for the characterization of nonlinear optical properties of polymers and the optimization of processing techniques to enhance polymer nonlinearities.
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SELECTED PUBLICATIONS
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I. Rocha-Mendoza, D. R. Yankelevich, M. Wang, C. Bratton, K. M. Reiser, C. W. Frank, and A. Knoesen “Sum Frequency Vibrational Spectroscopy: The Molecular Origins of the Optical Second Order Nonlinearity of Collagen,” Biophysical Journal, Vol. 63, 2007.
K. M. Reiser, C. Bratton, , D. R. Yankelevich, I. Rocha-Mendoza, A. Knoesen, and Feffrey Lotz, “Quantitative Analysis of Structural Disorder in Intervertebral Disks using Second Harmonic Generation Imaging: Comparison with Morphometric Analysis”, Journal of Biomedical Optics, vol.12(6), 064019, 2007.
K. H. Park, R. J. Twieg, R. Ravikiran, L. F. Rhodes, R. A. Schick, D.R. Yankelevich, and A. Knoesen, “Synthesis and nonlinear optical properties of vinyl addition polynorbornenes”,. Macromolecules, vol. 37, 2004,
Campbell, J. A.; Knoesen, A.; Yankelevich, D. R.; “Measurement of the Modulation Efficiency of an Optical Phase Modulator using a Self-homodyne Receiver,“ IEEE Trans. on Microwave Theory and Techniques, vol. 14, (no. 9), 2002.
Arft, C.; Yankelevich, D. R.; Knoesen, A.; Mao, E. and Harris, J. S.; “In-Line Fiber Evanescent Field Electro-optic Modulators,” Journal of Nonlinear Optical Physics and Materials, Vol. 9, No. 1, 2000, pp. 79-94.
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