Active Spectral Control During Spectrum Synthesis

A spectral feature of a pulsed light beam produced by an optical source is estimated by modifying the wavelength of the pulsed light beam based on a predefined repeating pattern having a pattern period including a plurality of steps, the modification including shifting the wavelength of the pulsed l...

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Bibliographic Details
Main Authors SEONG NAKGEUON, ROKITSKI ROSTISLAV, O'BRIEN KEVIN
Format Patent
LanguageEnglish
Published 17.04.2014
Subjects
APPARATUS SPECIALLY ADAPTED THEREFOR
CINEMATOGRAPHY
COLORIMETRY
ELECTROGRAPHY
HOLOGRAPHY
MATERIALS THEREFOR
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
ORIGINALS THEREFOR
PHOTOGRAPHY
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:A spectral feature of a pulsed light beam produced by an optical source is estimated by modifying the wavelength of the pulsed light beam based on a predefined repeating pattern having a pattern period including a plurality of steps, the modification including shifting the wavelength of the pulsed light beam by a wavelength offset from a baseline wavelength for each step in the pattern period; measuring the wavelength of the light beam for each step in the pattern period as the wavelength is modified across the pattern; and estimating a spectral feature of the pulsed light beam over an evaluation window that includes all of the steps within the pattern period based at least in part on the measured wavelength of the light beam for each step in the pattern period.
Bibliography:Application Number: US201313830466