Laser cooling of antimatter and its application in ALPHA nad HAICU projects

In 2021, the ALPHA collaboration demonstrated the first laser cooling of antimatter by 1D Doppler cooling on the Lyman-α transition in antihydrogen with a ns-scale pulsed 121 nm beam obtained using triple harmonic generation in a Xe-Ar gas cell. We show the extent of 3-dimensional cooling provided by the laser and detail the application of this technology to spectroscopy of the antihydrogen atom on the 1S-2S transition. We report on improvements to the laser system since the 2021 publication. We further report on the planning and development of laser systems for cooling on a hydrogen project (HAICU) with the eventual goal of replicating matter and antimatter experiments in the same testbed.