Harland G. Tompkins received his BS in physics from the University of Missouri and his PhD in physics from the University of Wisconsin-Milwaukee. He is a consultant for the J. A. Woollam Company in Lincoln, NE, as well as for other companies. He has written numerous journal articles in the reviewed technical literature, is the author of four books, and has edited two books.James N. Hilfiker graduated from the Electrical Engineering Department of the University of Nebraska, where he studied under Professor John Woollam. He joined the J.A. Woollam Company upon graduation and has worked in their applications lab for 20 years. His research at the J.A. Woollam Company has focused on new applications of ellipsometry, including characterization of anisotropic materials, liquid crystal films, and, more recently, thin film photovoltaics. He has authored over 40 technical articles involving ellipsometry.

Harland G. Tompkins received his BS in physics from the University of Missouri and his PhD in physics from the University of Wisconsin-Milwaukee. He is a consultant for the J. A. Woollam Company in Lincoln, NE, as well as for other companies. He has written numerous journal articles in the reviewed technical literature, is the author of four books, and has edited two books.James N. Hilfiker graduated from the Electrical Engineering Department of the University of Nebraska, where he studied under Professor John Woollam. He joined the J.A. Woollam Company upon graduation and has worked in their applications lab for 20 years. His research at the J.A. Woollam Company has focused on new applications of ellipsometry, including characterization of anisotropic materials, liquid crystal films, and, more recently, thin film photovoltaics. He has authored over 40 technical articles involving ellipsometry.

Harland G. Tompkins received his BS in physics from the University of Missouri and his PhD in physics from the University of Wisconsin-Milwaukee. He is a consultant for the J. A. Woollam Company in Lincoln, NE, as well as for other companies. He has written numerous journal articles in the reviewed technical literature, is the author of four books, and has edited two books.James N. Hilfiker graduated from the Electrical Engineering Department of the University of Nebraska, where he studied under Professor John Woollam. He joined the J.A. Woollam Company upon graduation and has worked in their applications lab for 20 years. His research at the J.A. Woollam Company has focused on new applications of ellipsometry, including characterization of anisotropic materials, liquid crystal films, and, more recently, thin film photovoltaics. He has authored over 40 technical articles involving ellipsometry.