A 750 mW, continuous-wave, solid-state laser source at 313 nm for   cooling and manipulating trapped 9Be+ ions
  We present a solid-state laser system that generates 750 mW of continuous-wave single-frequency output at 313 nm. Sum-frequency generation with fiber lasers at 1550 nm and 1051 nm produces up to 2 W at 626 nm. This visible light is then converted to UV by cavity-enhanced second-harmonic generation. The laser output can be tuned over a 495 GHz range, which includes the 9Be+ laser cooling and repumping transitions. This is the first report of a narrow-linewidth laser system with sufficient power to perform fault-tolerant quantum-gate operations with trapped 9Be+ ions by use of stimulated Raman transitions. 
Andrew. C. Wilson, Christian Ospelkaus, Aaron. P. VanDevender, Jonas.   A. Mlynek, Kenton. R. Brown, Dietrich Leibfried and ...
quant-ph physics.atom-ph physics.optics