| 摘要 |
<p>A plasma processing apparatus includes a processing chamber which plasma-processes a sample, a first high-frequency power supply which supplies first high-frequency power for plasma generation to the processing chamber, a second high-frequency power supply which supplies second high-frequency power to a sample stage on which the sample is placed and a pulse generation device which generate first pulses for time-modulating the first high-frequency power and second pulses for time-modulating the second high-frequency power. The pulse generation device includes a control device which controls the first and second pulses so that frequency of the first pulses is higher than frequency of the second pulses and the on-period of the second pulse is contained in the on-period of the first pulse.</p> |
