
Laser World of Photonics 2022
Discover MEXL Gain Crystals, the next generation laser crystals for watt-level yellow lasers, presented at the LASER World of PHOTONICS show, April 26 – 29!

Breaking the wall!
Twenty-One Semiconductors is among the finalists for the Falling Walls Breakthrough of the Year 2020.


Red-emitting mode-locked semiconductor disk laser
Stable fundamental mode locking of a red-emitting VECSEL has been demonstrated in a Z-shaped cavity!


Photonics West/BIOS trade show 2020 in San Francisco
Twenty-One Semiconductors is visiting this year’s Photonics West trade show in San Francisco. We are looking forward to meet our partners and customers and discover new innovative developments in the fields of laser technology.



LASER World of PHOTONICS show in Munich
Twenty-One Semiconductors is exhibiting for the first time at the LASER World of PHOTONICS show, June 24 – 27, at Munich International Trade Fair Center. We are looking forward to meet our partners and discover the photonics industry’s latest trends and technologies.

Photonics West exhibition and SPIE LASE conference 2019 in San Francisco
Twenty-One Semiconductors is visiting this year’s Photonics West exhibition and SPIE LASE conference in San Francisco. We are looking forward to explore innovative developments in the fields of semiconductor fabrication and laser technology.