Multichip vertical-external-cavity surface-emitting lasers: a coherent power scaling scheme.
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.
Fan
Li
L
College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA. lifan@optics.arizona.edu
Fallahi
Mahmoud
M
Hader
Jörg
J
Zakharian
Aramais R
AR
Moloney
Jerome V
JV
Murray
James T
JT
Bedford
Robert
R
Stolz
Wolfgang
W
Koch
Stephan W
SW