Patent ID: 7737053

Claim:
A manufacturing method of a semiconductor device, comprising the steps of: forming a gate electrode over a semiconductor substrate; selectively injecting first impurities into the semiconductor substrate to form a first impurity region; processing a first laser beam having a fundamental wave into a long beam on a surface of the first impurity region; moving the surface of the first impurity region relatively to the long beam to scan the first laser beam to activate the first impurity region, forming a sidewall on a side of the gate electrode after activating the first impurity region; selectively injecting second impurities into the semiconductor substrate more deeply than the first impurities to form a second impurity region after forming the sidewall; activating the second impurity region by a second laser beam, wherein the first laser beam having a fundamental wave is oscillated with a pulse width of 1 femtosecond or more and 10 picoseconds or less.