Richard K. DeFreez (1980) retired in 2018 as a senior scientist for Met One Instruments, Inc. in Grants Pass, OR. He formerly held similar posts at MesoSystem Technology and Hach Homeland Security Technologies in Grants Pass, OR. He has also been on the faculty of Linfield Research Institute and the Oregon Graduate Institute of Science and Technology, where he earned his Ph.D. in applied physics in 1985. He was honored as one of Sonoma State University’s Distinguished Alumni in 1995.
Joanne del Corral (1983) passed away 4 June 2020. She retired in 2018 after thirty-five years as a lecturer in the SSU Department of Physics and Astronomy. She taught several introductory laboratory courses.
Danielle Del Vecchio [formerly Beddow] (2007) is a quality engineer at Alluxa in Santa Rosa. She spent a year teaching English in Taipei, Taiwan, where she was also an engineering consultant to East-Tender Optoelectronics Corp.
Alan DeMars (1978) is a member of the DSP/BIOS Kernel development team at Texas Instruments in Santa Barbara, CA. He was formerly manager of DSP applications development with Ericsson IP Network Edge & Access in Santa Barbara. He received an M.S. in scientific instrumentation at UC Santa Barbara in 1980.
Felix Desperrier (2015) is a staff geologist with Lettis Consultants International, Inc. in San Rafael.
Jeremy Dixon (2007) is a senior software engineer with View Dynamic Glass (formerly Soladigm) in Olive Branch, MS.
Michael Dobbs (2017) is an associate at Sage Renewable Energy Counsulting in San Rafael. He previously conducted research at the Wolfram Summer School and at CERN.
J. Robert Dobbson [formerly Mark Robinson] (1993) is the physical sciences technician at College of Marin.
Bill Dover (1995) is director of business development for Edmund Industrial Optics.
Joel Drake (1982) is a senior program manager at General Atomics in the San Diego area.