Tunable 397 nm Light Source for Laser Cooling of Ca Ions Based on Frequency Doubling of Diode Laser
Kazuhiro Hayasaka, Masayoshi Watanabe, Hidetsuka Imajo +2 more
We have fabricated an rf ion trap and laser-cooling light sources to observe shelving transition in a single calcium ion. All the radiation required for laser cooling and observation of the transition can be prepared with diode lasers in this system. Continuous-wave radiation at 397 nm for laser cooling was generated by frequency doubling of a GaAlAs laser in an external enhancement cavity. As a preliminary experiment for observing the shelving transition, laser cooling of one hundred calcium ions was demonstrated using this radiation and another diode laser.
Japanese Journal of Applied Physics•Mar 1, 1994•10 citations