Patent ID: 9627186
Date: 2017-04-18
CPC Classifications: G01J,H01J

Claim:
1. A plasma processing system comprising: a plasma chamber having a plasma region associated with an optical sensor that is directed toward the plasma region, wherein the optical sensor is configured to capture an optical emission from the plasma region, and the optical sensor produces an output sensor signal for the optical emission; at least one RF generator coupled to the plasma chamber through a match circuit; an RF timing system coupled to the at least one RF generator, wherein the RF timing system is configured to generate a timing reference signal; and a system controller coupled to the optical sensor, wherein the system controller is configured to process an optical pulsed plasma analyzer, wherein the optical pulsed plasma analyzer is configured to receive the output sensor signal from the optical sensor and is further configured to determine a set of amplitude statistics corresponding to an amplitude of the optical emission captured by the optical sensor, wherein to determine the set of amplitude statistics, the optical pulsed plasma analyzer is configured to,