Bimetallic grayscale photomasks written using optical density feedback control

Autor: Glenn H. Chapman, Reza Qarehbaghi, James M. Dykes
Rok vydání: 2011
Předmět:
Zdroj: SPIE Proceedings.
ISSN: 0277-786X
Popis: When bimetallic thin films of Bi/In and Sn/In are laser exposed, they oxidize and become variably transparent. By controlling the writing laser power, binary and grayscale photomasks can be produced with the mask's transparency (optical density, OD), ranging between ~3.0 (unexposed) to
Databáze: OpenAIRE