Laser Cooling and Magneto-optical Trapping of Holmium Atoms

Download or read book Laser Cooling and Magneto-optical Trapping of Holmium Atoms written by and published by . This book was released on 2013 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis covers the detailed design and construction of the experimental apparatus and methods developed for laser cooling and magneto-optical trapping Holmium atoms. The trapping apparatus including the laser systems and the UHV vacuum system to produce the Ho MOT are discussed. The Ho MOT at 410.5 nm transition with 32MHz linewidth was realized without repumping lasers. A MOT with population of 10^6 atoms was formed from 1.5 W of 410 nm blue light, with atom density of 10^10/cm3. Sub-Doppler temperatures in the MOT were observed. The effect of the redundant repumping beam on the MOT population was also discussed. Hyperfine spectroscopy of the strong transition at 410.5nm and a comparably strong transition at 416 nm were obtained and discussed. A theory was developed for analyzing an optical and microwave approach to optical pumping into a single Zeeman sublevel in the 128 hyperfine ground state manifold of Holmium atoms, for state preparation of a collectively encoded quantum register.