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| Yablonovitch | |
|---|---|
| Name | Eli Yablonovitch |
| Birth date | 1950s |
| Birth place | United States |
| Nationality | American |
| Fields | Physics, Electrical engineering, Optics |
| Workplaces | Bell Labs, University of California, Berkeley, Lawrence Berkeley National Laboratory, Princeton University, Harvard University |
| Alma mater | Princeton University, Massachusetts Institute of Technology |
| Doctoral advisor | John D. Joannopoulos |
| Known for | Photonic crystals, light trapping, Yablonovitch limit, spontaneous emission control |
| Awards | MacArthur Fellows Program, National Academy of Engineering, National Academy of Sciences, Wolf Prize in Physics |
Yablonovitch is an American physicist and electrical engineer noted for pioneering work in photonic crystals, light trapping, and the control of spontaneous emission, which reshaped research in optics, semiconductor photonics, and solar cells. He is widely credited with foundational theoretical and experimental contributions that bridge solid-state physics, quantum electrodynamics, and materials science, influencing laboratories and companies across Silicon Valley, Cambridge, Massachusetts, and international research institutions. His work connects to developments at major centers such as Bell Labs, MIT, UC Berkeley, and Lawrence Berkeley National Laboratory.
Yablonovitch was born in the United States and received early education that led him to Princeton University for undergraduate studies and to the Massachusetts Institute of Technology for graduate work, where he studied under advisors connected to John D. Joannopoulos and collaborators from Bell Labs networks. During his formative years he engaged with communities around Semiconductor Research Corporation, DARPA-funded programs, and summer collaborations involving researchers from IBM Research, AT&T Bell Laboratories, and Stanford University. Mentors and contemporaries included faculty and students from Harvard University, Caltech, Cornell University, and Yale University who were active in solid-state physics and quantum optics.
Yablonovitch's career spans academic appointments and industrial research, including significant periods at Bell Labs, the University of California, Berkeley engineering department, and associations with Lawrence Berkeley National Laboratory, where he worked alongside researchers from Sandia National Laboratories, Argonne National Laboratory, and Los Alamos National Laboratory. He collaborated with scientists from Nikon, Hitachi, Intel, Texas Instruments, and RCA on lithography and semiconductor processing methodologies that enabled photonic structures. His research network extended to principal investigators at National Institutes of Health-funded optical imaging centers, European laboratories such as CERN-affiliated photonics groups, and Japanese institutions like University of Tokyo and University of Tokyo spin-off ventures.
His projects integrated concepts from Maxwell's equations-based computational electrodynamics methods used in finite-difference time-domain simulations developed at places like MIT and Princeton University, and drew on experimental techniques from scanning electron microscopy labs at University of Illinois Urbana–Champaign and University of Michigan. Yablonovitch worked with interdisciplinary teams that included researchers from IBM, HP Labs, Bellcore, and startup companies in Silicon Valley and Cambridge, UK to translate photonic crystal concepts into devices for telecommunications and optical computing.
Yablonovitch introduced the concept of three-dimensional photonic band gap materials and proposed strategies for controlling spontaneous emission using dielectric structures inspired by analogies to electronic band structures in solid-state physics. His 1987 proposals and experiments are central to what the field calls the Yablonovitch limit for light trapping in solar cells, closely related to limits discussed by contemporaries at NREL, Fraunhofer Society, and Bell Labs. These ideas influenced subsequent work by researchers at University of Southampton, ETH Zurich, EPFL, and University of Cambridge on photonic crystals, metamaterials, and plasmonic structures, and stimulated device demonstrations in collaboration with groups at Sony, Panasonic, Samsung, and Sharp.
His theoretical insights connected to fundamental studies by scientists at Harvard and Caltech on cavity quantum electrodynamics and to experimental platforms developed at JILA, NIST, and Max Planck Institute for the Science of Light. The Yablonovitch limit has been invoked in analyses at Sandia National Laboratories and Lawrence Livermore National Laboratory for photovoltaic efficiency modeling, and in industry roadmaps from SEMI and IEC-related consortia.
Yablonovitch's recognitions include election to the National Academy of Engineering, the National Academy of Sciences, and awards such as the MacArthur Fellows Program fellowship, the Wolf Prize in Physics, and prizes awarded by organizations like the Optical Society of America (now Optica), IEEE, and APS. He has received honorary degrees and visiting professorships at institutions including Princeton University, MIT, Stanford University, Harvard University, and international honors from Imperial College London and University of Tokyo. Professional societies such as SPIE, OSA, IEEE Photonics Society, and American Physical Society have recognized his contributions with invited lectureships and named awards.
- Foundational papers on photonic crystals and spontaneous emission control published in leading journals affiliated with American Physical Society, Nature Publishing Group, and IEEE venues, coauthored with collaborators from MIT, Princeton University, UC Berkeley, and Bell Labs. - Key reviews and conference proceedings presented at meetings organized by SPIE, Optica, IEEE Photonics Conference, and panels under DARPA and NSF funding agencies. - Technical contributions to textbooks and edited volumes alongside authors from Cambridge University Press, Oxford University Press, and contributors from Harvard, Caltech, and ETH Zurich.
Yablonovitch is noted for mentoring generations of scientists who took faculty positions at MIT, Stanford University, UC Berkeley, Princeton University, Harvard University, Caltech, University of Illinois Urbana–Champaign, University of Michigan, and international universities including University of Tokyo, EPFL, ETH Zurich, and Imperial College London. His influence continues through startups and spin-offs formed with partners from Silicon Valley, Boston, and Tel Aviv ecosystems, collaborations with industry leaders like Intel, Samsung, Sony, and technology transfers to national laboratories such as NREL and Lawrence Berkeley National Laboratory. The concepts he introduced remain central in contemporary research programs at DARPA, NSF, European Research Council, and industrial roadmaps from SEMI and IEC.
Category:American physicists Category:Optical physicists Category:Members of the United States National Academy of Sciences