Vertical Cavity Surface-Emitting Laser (VCSEL)

Photography by Susanne Weidenfeld

When it comes to beam quality, efficiency and compactness, VCSELs are the laser of choice for emission in the range of 630 to 1100 nm. In addition to the design and growth of the semiconductor structure, Twenty-One Semiconductors can also take care of processing steps, completing your process chain from the first idea to the final product.

By adjusting both layer design and processing workflow, we are able to choose between high yields of emitters operating in single- or multi-transverse mode. Furthermore, we offer the production of VCSEL arrays, specifically designed for your particular application.

Semiconductor Disk Laser (SDL) / Vertical External-Cavity Surface-Emitting Laser (VECSEL)

Photography by Hermann Kahle

Semiconductor disk lasers deliver output powers in the multi-Watt regime with diffraction-limited beam qualities and large tuning ranges. Twenty-One Semiconductors provides you with the perfect gain structure for direct emission between 630 and 1200 nm. Our expertise in active region and resonator design allows our customers to exploit the full potential of the open-cavity VECSEL concept.

Membrane Laser

Photography by Ana Ćutuk

Which laser wavelength would you like to have? The innovative membrane laser concept allows for unprecedented freedom when designing your specific gain structure. Without the need of a monolithically grown semiconductor mirror, a large wavelength range of 600 to 1200 nm can be accessed, with the additional benefit of maximum heat extraction.