title: High power coherent beam combination from two fiber lasers.
abstract: Phase locking of two fiber lasers is demonstrated experimentally by the use of a self-imaging resonator with a spatial filter. The high-contrast interference strips of the coherent beam profile are observed. The coherent output power of the fiber array exceeds 12W and the efficiency of coherent power combination is 88% with pump power of 60W. The whole system operates quite stably and, for the spatial filter, no thermal effects have been observed, which means that we can increase the coherent output power further by this method.
authors.forename: Bing
authors.initials: B
authors.lastname: He
authors.forename: Qihong
authors.initials: Q
authors.lastname: Lou
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou
authors.forename: Jingxing
authors.initials: J
authors.lastname: Dong
authors.forename: Yunrong
authors.initials: Y
authors.lastname: Wei
authors.forename: Dong
authors.initials: D
authors.lastname: Xue
authors.forename: Yunfeng
authors.initials: Y
authors.lastname: Qi
authors.forename: Zhoupin
authors.initials: Z
authors.lastname: Su
authors.forename: Libo
authors.initials: L
authors.lastname: Li
authors.forename: Fangpei
authors.initials: F
authors.lastname: Zhang