2.04-μm Single and Dual-Comb Modelocked InGaSb-Mixsel

Passively modelocked, optically pumped semiconductor disk lasers also referred to as VECSELs or MIXSELs combine the wavelength versatility and wafer scalability of semiconductors, together with a high beam quality of vertical emitters and a good average output power [1], [2]. Typically, a V-shaped cavity is used for SESAM-modelocked VECSELs. This is simplified to a straight linear cavity with MIXSELs, for which the SESAM is integrated into the VECSEL chip.