title: Christiansen filters realized with spherical lenses.
abstract: We propose the use of a smooth spherical lens in the Christiansen filter cell. The realization of common filtering functions with such a filter configuration is discussed. A systematic design technique based on inverse Fourier cosine transform or inverse Laplace transform is established, with which a desired, prescribed response can be tailored by properly configuring the lens of the filter. Four Christiansen filters centered at 545 nm with a full width at half-maximum of 2 nm are analyzed in detail.
authors.affiliation: School of Opto-Electronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.forename: Kang
authors.initials: K
authors.lastname: Xie
authors.forename: Haiming
authors.initials: H
authors.lastname: Jiang
authors.forename: Nick
authors.initials: N
authors.lastname: Goddard