title: Umbrella-type dynamic-focusing mirror system.
abstract: The property that the bimorph deformation is generated along a quadratic curve is used to form a variable quadratic mirror surface so that an effective dynamic-focusing mirror system is realized. The effectiveness and the limitations of the method are examined numerically with some comparisons with the COAT system. A typical simple dynamic-focusing mirror system is constructed using this method. The results of numerical analysis and experiment show the usefulness of the method for dynamic focusing of laser beams.
authors.forename: T
authors.initials: T
authors.lastname: Sato
authors.forename: N
authors.initials: N
authors.lastname: Sakuma
authors.forename: O
authors.initials: O
authors.lastname: Ikeda
authors.forename: H
authors.initials: H
authors.lastname: Ishida