Vertical external-cavity surface-emitting lasers (VECSELs) combine a semiconductor gain structure with an external optical cavity. This architecture provides greater freedom in optical design than conventional edge-emitting semiconductor lasers and can deliver high beam quality together with substantial optical power.
VECSELs can support multimode, single-mode, and single-frequency operation, depending on the laser design. The external cavity also provides flexibility for wavelength selection and tuning, making the technology suitable for applications requiring high-quality, stable optical sources.
Modulight’s VECSEL portfolio includes sources integrated into the ML6600 platform. The ML6645, for example, covers a 460–630 nm wavelength range (yellow-orange) and provides several watts of output power for applications including life sciences, microscopy, and quantum technologies.
