Laser radiation system
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United States of America Patent
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Aug 27, 2024
Grant Date -
Aug 6, 2020
app pub date -
Apr 22, 2020
filing date -
Dec 21, 2017
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Abstract
A laser radiation optical system for laser doping and post-annealing, the laser radiation system including A. a laser apparatus configured to generate pulsed laser light that belongs to an ultraviolet region, B. a stage configured to move a radiation receiving object in an at least one scan direction, the radiation receiving object being an impurity source film containing at least an impurity element as a dopant and formed on a semiconductor substrate, and C. an optical system including a beam homogenizer configured to shape the beam shape of the pulsed laser light into a rectangular shape and generate a beam for laser doping and a beam for post-annealing that differ from each other in terms of a first beam width in the scan direction but have the same second beam width perpendicular to the scan direction.
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