Patent ID: 11947268
Assignee: CYMER, LLC
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A control module for an optical source apparatus, the control module configured to:
cause the optical source apparatus to generate a first pulse of light from the optical source apparatus, the first pulse of light having a first wavelength and a first value of an energy property;
adjust at least one component of the optical source apparatus from a first configuration state to a second configuration state, the at least one component being configured to control a spectral property of light emitted from the optical source apparatus;
determine a corrected excitation signal; and
apply the corrected excitation signal to the optical source apparatus after the at least one component is adjusted to generate a second pulse of light from the optical source apparatus, the second pulse of light having a second wavelength and the first value of the energy property, wherein the pulsed light beam comprises at least the first pulse of light and the second pulse of light, the spectral distance is a difference between the first wavelength and the second wavelength, the optical source apparatus is associated with a plurality of transfer functions, each transfer function corresponds to a configuration state of the at least one component, and the corrected excitation signal corrects for a difference between the transfer function corresponding to the first configuration state and the transfer function of the second configuration state.