title: Activities of optical laboratories 1 and 2 at the Photon Factory.
abstract: Recent activities at optical laboratories 1 and 2 at the Photon Factory are presented. The activities are (i) construction of optical laboratory 1, (ii) reconstruction of optical laboratory 2, (iii) construction of a visible synchrotron radiation beam extraction mirror made of beryllium, (iv) small-beam-profile measurement by means of the image restoration method, (v) application of the adaptive optical system for correction of distorted wavefronts caused by deformation of the extraction mirror, (vi) construction of a synchrotron radiation interferometer for investigation of the spatial coherency of the visible synchrotron radiation beam and its application to the measurement of vertical beam profile and size.
authors.affiliation: High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Mitsuhashi
authors.forename: S
authors.initials: S
authors.lastname: Hiramatsu
authors.forename: N
authors.initials: N
authors.lastname: Takeuchi
authors.forename: M
authors.initials: M
authors.lastname: Itoh
authors.forename: T
authors.initials: T
authors.lastname: Yatagai