Sub-Hz VECSEL platform for optical clocks

VECSELs have rapidly gained a position as an attractive laser solution for optical atomic clocks and quantum computers utilizing trapped ions and cold atoms. We report development of commercial VECSEL-systems and present recent developments for optical clocks including wavelength coverage for several clock transitions (eg. Yb 578nm, Sr 698 nm, Ca+ 729nm, Yb+ 436nm and 467nm, and Ba+ 1762 nm), long-term stability, noise suppression, and linewidth narrowing (sub-Hz with intracavity EOM).