title: Thermal refraction focusing in planar index-antiguided lasers.
abstract: Thermal refraction focusing in planar index-antiguided lasers is investigated both theoretically and experimentally. An analytical model based on zero-field approximation is presented for treating the combined effects of index antiguiding and thermal focusing. At very low pumping power, the mode is antiguided by the amplifier boundary, whereas at high pumping power it narrows due to thermal focusing. Theoretical results are in reasonable agreement with experimental data.
authors.affiliation: Department of Electrical and Computer Engineering, The University of North Carolina at Charlotte, Charlotte, North Carolina 28223, USA.
authors.forename: Lee W
authors.initials: LW
authors.lastname: Casperson
authors.forename: Adam
authors.initials: A
authors.lastname: Dittli
authors.forename: Tsing-Hua
authors.initials: TH
authors.lastname: Her