Patent ID: 8883028
Filing Date: 2014-11-11
Classification: H01J

Abstract:
1. A method for processing a substrate in a plasma processing chamber of a plasma processing system, said plasma processing chamber having at least one plasma generating source and at least a reactive gas source for providing at least a first reactive gas into an interior region of said plasma processing chamber and a non-reactive gas source for providing at least a first non-reactive gas said interior region of said plasma processing chamber, comprising: (a) disposing said substrate on a work piece holder within said interior region; (b) performing a mixed-mode pulsing (MMP) preparation phase, including flowing said first reactive gas into said interior region, and (c) performing a mixed mode pulsing (MMP) reactive phase, including flowing at least said first non-reactive gas into said interior region, and (d) repeating steps (b) and (c) for a plurality of times, wherein said at least one plasma generating source is excited with a first RF signal having a first RF frequency during said MMP preparation phase, said first RF signal representing an RF signal having chirped frequencies.