Home People Erich Ippen People FacultyFaculty AI+DFaculty CSFaculty EEFaculty EmeritusLecturers Leadership Staff Elihu Thomson Professor of EE and Physics (Emeritus) , [EE] ippen@mit.edu (617) 253-8504 Office: 36-319 Website Latest News More News November 8, 2018 Remembering MIT Professor Alan L. McWhorter, 1930-2018 Long-time EECS professor and Lincoln Laboratory division head is best known for research on transistors, lasers, and masers. August 7, 2018 On-chip optical filter processes wide range of light wavelengths The silicon-based system offers a smaller, cheaper alternative to other “broadband” filters and could improve a variety of photonic devices.