title: Fabrication of alignment structures for a fiber resonator by use of deep-ultraviolet lithography.
abstract: We present a novel method to mount and align an optical-fiber-based resonator on the flat surface of an atom chip with ultrahigh precision. The structures for mounting a pair of fibers, which constitute the fiber resonator, are produced by a spin-coated SU-8 photoresist technique by use of deep-UV lithography. The design and production of the SU-8 structures are discussed. From the measured finesses we calculate the coupling loss of the SU-8 structures acting as a kind of fiber splice to be smaller than 0.013 dB.
authors.affiliation: Lehrstuhl für Optoelektronik, Universität Mannheim, B6 23-29, D-68131 Mannheim, Germany. xiyuanl@rumms.uni-mannheim.de
authors.forename: Xiyuan
authors.initials: X
authors.lastname: Liu
authors.forename: Karl-Heinz
authors.initials: KH
authors.lastname: Brenner
authors.forename: Marco
authors.initials: M
authors.lastname: Wilzbach
authors.forename: Michael
authors.initials: M
authors.lastname: Schwarz
authors.forename: Thomas
authors.initials: T
authors.lastname: Fernholz
authors.forename: Jörg
authors.initials: J
authors.lastname: Schmiedmayer