title: Multichip vertical-external-cavity surface-emitting lasers: a coherent power scaling scheme.
abstract: We propose an efficient coherent power scaling scheme, the multichip vertical-external-cavity surface-emitting laser (VECSEL), in which the waste heat generated in the active region is distributed on multi-VECSEL chips such that the pump level at the thermal rollover is significantly increased. The advantages of this laser are discussed, and the development and demonstration of a two-chip VECSEL operating around 970 nm with over 19 W of output power is presented.
authors.affiliation: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA. lifan@optics.arizona.edu
authors.forename: Li
authors.initials: L
authors.lastname: Fan
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Fallahi
authors.forename: Jörg
authors.initials: J
authors.lastname: Hader
authors.forename: Aramais R
authors.initials: AR
authors.lastname: Zakharian
authors.forename: Jerome V
authors.initials: JV
authors.lastname: Moloney
authors.forename: James T
authors.initials: JT
authors.lastname: Murray
authors.forename: Robert
authors.initials: R
authors.lastname: Bedford
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Stolz
authors.forename: Stephan W
authors.initials: SW
authors.lastname: Koch