title: Gain-coupled distributed feedback laser based on periodic surface anode canals.
abstract: A single-longitude-mode, broad-stripe, gain-coupled, distributed-feedback laser based on periodic surface anode canals (PSACs) is demonstrated. The PSACs, produced by i-line lithography, enhance the contrast of periodic current density in the active layer without introducing effective photon coupling; calculated grating κL is only 0.026. Power of 144.6 mW at 968.8 nm, with spectrum linewidth less than 0.04 nm on every uncoated cleavage facet, is obtained at a current of 1.2 A with a side-mode suppression ratio >29  dB.
authors.forename: Yongyi
authors.initials: Y
authors.lastname: Chen
authors.forename: Peng
authors.initials: P
authors.lastname: Jia
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Qin
authors.forename: Hong
authors.initials: H
authors.lastname: Chen
authors.forename: Feng
authors.initials: F
authors.lastname: Gao
authors.forename: Xing
authors.initials: X
authors.lastname: Zhang
authors.forename: Xiaonan
authors.initials: X
authors.lastname: Shan
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Ning
authors.forename: Lijun
authors.initials: L
authors.lastname: Wang