Publications

Mode selection and tuning of single-frequency short-cavity VECSELs

Serkland, Darwin K.; So, Haley M.; Peake, Gregory M.; Wood, Michael G.; Grine, Alejandro J.; Hains, Christopher H.; Geib, Kent M.; Keeler, Gordon A.

We report on mode selection and tuning properties of vertical-external-cavity surface-emitting lasers (VECSELs) containing coupled semiconductor and external cavities of total length less than 1 mm. Our goal is to create narrowlinewidth (<1MHz) single-frequency VECSELs that operate near 850 nm on a single longitudinal cavity resonance and tune versus temperature without mode hops. We have designed, fabricated, and measured VECSELs with external-cavity lengths ranging from 25 to 800 μm. We compare simulated and measured coupled-cavity mode frequencies and discuss criteria for single mode selection.