Andrew Sarangan

Professor of Electro-Optics and Photonics

Prof. Andrew Sarangan
University of Dayton
300 College Park
Dayton, OH 45469-2951
(937) 229-3190

Curriculum Vita


Optical coatings are ubiquitous on all optical components such as lenses, mirrors, cameras, windows etc… Anti-reflection coatings are used on refractive optics and windows. High-reflection coatings are used in mirrors, which can be a simple metal coating or several layers of dielectric films depending on the specific requirements of the application. Long-pass and short-pass edge filters, bandpass filters, and line filters are other examples. In all of these cases, the principle is based on manipulating the reflection and transmission amplitudes and phase shift of each dielectric film so that the superposition of all the waves produces the desired output spectrum. The focus of this course is on the fundamental principles and  practical strategies employed in optical thin film design. The course will consist of four design projects and one fabrication project.


Reference Text

Andrew Sarangan, “Optical Thin Film Design“, CRC Press, 2021.