title: Suppression of progressive growth of intensity modulations with slit spatial filter in a laser system.
abstract: The performance of a slit spatial filter composed of two astigmatic lenses and two orthogonal slits for suppressing progressive growth of intensity modulations in a laser system was studied. Power spectral density (PSD) is used to evaluate the beam performance in the frequency domain. The filtering characteristics, image relay, and beam expansion properties of the slit spatial filter are discussed and demonstrated. The experimental results show that the progressive growth of intensity modulations has been effectively suppressed with the slit spatial filter.
authors.forename: Zhenwu
authors.initials: Z
authors.lastname: Zhuang
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang
authors.forename: Muyu
authors.initials: M
authors.lastname: Yi
authors.forename: Xiong
authors.initials: X
authors.lastname: Han
authors.forename: Xiao
authors.initials: X
authors.lastname: Yuan