EUV radiation generation methods and systems

A method for generating EUV light includes providing a laser beam having a Gaussian distribution. This laser beam can be then modified from a Gaussian distribution to a ring-like distribution. The modified laser beam is provided through an aperture in a collector and interfaces with a moving droplet...

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Bibliographic Details
Main Authors Liu, Bo-Tsun, Chen, Li-Jui, Fu, Tzung-Chi, Chang, Chun-Lin Louis, Yeh, Jen-Hao, Cheng, Po-Chung
Format Patent
LanguageEnglish
Published 08.08.2023
Subjects
APPARATUS SPECIALLY ADAPTED THEREFOR
CINEMATOGRAPHY
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROGRAPHY
HOLOGRAPHY
MATERIALS THEREFOR
ORIGINALS THEREFOR
PHOTOGRAPHY
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES
PHYSICS
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Summary:A method for generating EUV light includes providing a laser beam having a Gaussian distribution. This laser beam can be then modified from a Gaussian distribution to a ring-like distribution. The modified laser beam is provided through an aperture in a collector and interfaces with a moving droplet target, which generates an extreme ultraviolet (EUV) wavelength light. The generated EUV wavelength light is provided to the collector away from the aperture. In some embodiments, a mask element may also be used to modify the laser beam to a shape.
Bibliography:Application Number: US202217818210